Ok, I took it apart a bit. A few comments and bugs.
The following textures are part of the original Oblivion. Unless you have a good reason to
replace the original (as well as any texture replacer like QTP3 the people might use), I would advice against including them:
Textures\wood\woodfloor03.dds (DE8B7799)Textures\wood\woodfloor03old.dds (DB6F130C)Textures\wood\woodfloor03old_n.dds (C6D0C8A3)Textures\wood\woodfloor03_n.dds (3FCD0A32)Textures\wood\woodpost01.dds (841CF89D)Textures\wood\woodpost01_n.dds (540123EE)Textures\wood\woodpostend01.dds (6E170F49)Textures\wood\woodpostend01_n.dds (2FE4BB64)Textures\wood\woodpostend03.dds (6EEFE711)Textures\wood\woodpostend03_n.dds (7BE7AD43)Textures\rocks\chrock01.dds (33149002)Textures\rocks\chrock01_n.dds (58A9FCB7)Textures\rocks\chrock02.dds (296700AF)Textures\rocks\chrock02_n.dds (7A9B80CB)Textures\rocks\cprockmoss01.dds (C47A9E00)Textures\rocks\cprockmoss01_n.dds (0FE18F02)Textures\rocks\cprockmoss02.dds (069FE530)Textures\rocks\cprockmoss02_n.dds (FB7FCF4F)Textures\rocks\cprockmoss03.dds (5BF3391B)Textures\rocks\cprockmoss03_n.dds (4A586ED3)Textures\rocks\gcrock01.dds (D0B3C457)Textures\rocks\gcrock01_n.dds (DEEE46C1)Textures\rocks\greatforestrock01.dds (853129E1)Textures\rocks\greatforestrock01_n.dds (AD72EBEA)Textures\rocks\greatforestrock02.dds (C8FFBC88)Textures\rocks\greatforestrock02_n.dds (D5CE8330)Textures\rocks\greatforestrock03.dds (3F65BA10)Textures\rocks\greatforestrock03_n.dds (285D4428)Textures\rocks\greatforestrocklichen01.dds (BB03114E)Textures\rocks\greatforestrocklichen01_n.dds (0358F027)Textures\rocks\greatforestrocklichen02.dds (A2C3E5E3)Textures\rocks\greatforestrocklichen02_n.dds (A7960BE2)Textures\rocks\greatforestrocklichen03.dds (F75FF63A)Textures\rocks\greatforestrocklichen03_n.dds (CD1517A6)Textures\rocks\greatforestrockmoss01.dds (9A75F09F)Textures\rocks\greatforestrockmoss01_n.dds (FEDBC704)Textures\rocks\greatforestrockmoss02.dds (E0CDA30F)Textures\rocks\greatforestrockmoss02_n.dds (4A415B04)Textures\rocks\greatforestrockmoss03.dds (C4DB689B)Textures\rocks\greatforestrockmoss03_n.dds (2159231D)Textures\rocks\jmrock01.dds (870F7B6D)Textures\rocks\jmrock01_n.dds (1B66A90B)Textures\rocks\jmrocksnow01.dds (0BEC8C5F)Textures\rocks\jmrocksnow01_n.dds (D84B5653)Textures\rocks\jmrocksnow02.dds (25810884)Textures\rocks\jmrocksnow02_n.dds (FD59C0B4)Textures\rocks\westweald\westweald01.dds (E02F8C30)Textures\rocks\westweald\westweald01_n.dds (1ABD6D4C)Textures\rocks\westweald\westweald02.dds (DAD225B8)Textures\rocks\westweald\westweald02_n.dds (740B2746)Textures\rocks\westweald\westweald03.dds (0F04BC69)Textures\rocks\westweald\westweald03_n.dds (46CF45EC)Textures\rocks\westweald\westweald04.dds (61E900CA)Textures\rocks\westweald\westweald04_n.dds (86A72975)Textures\rocks\westweald\westwealdburned01.dds (A559098A)Textures\rocks\westweald\westwealdburned01_n.dds (1ABD6D4C)Textures\rocks\westweald\westwealdburned02.dds (AB381826)Textures\rocks\westweald\westwealdburned02_n.dds (740B2746)Textures\rocks\westweald\westwealdmosshang01.dds (773EE74E)Textures\rocks\westweald\westwealdmosshang01_n.dds (503C9114)Textures\rocks\underwater\rockbeach01.dds (65F41878)Textures\rocks\underwater\rockbeach01_n.dds (2680FD59)Textures\rocks\underwater\rockbeach02.dds (98B71896)Textures\rocks\underwater\rockbeach02_n.dds (10EE1B19)Textures\rocks\underwater\rockbeach03.dds (63216EB0)Textures\rocks\underwater\rockbeach03_n.dds (BBD55F3E)Textures\rocks\underwater\rockbeach04.dds (E8DD1053)Textures\rocks\underwater\rockbeach04_n.dds (AC415C24)Textures\rocks\underwater\rockbeach05.dds (7FE32173)Textures\rocks\underwater\rockbeach05_n.dds (34D39645)Textures\rocks\ms14\greatforestms14rock01.dds (9140E796)Textures\rocks\ms14\greatforestms14rock01_n.dds (F227EBFF)Textures\rocks\ms14\greatforestms14rock02.dds (A3E6567A)Textures\rocks\ms14\greatforestms14rock02_n.dds (8AFA2804)Textures\rocks\ms14\greatforestms14rock03.dds (647977D7)Textures\rocks\ms14\greatforestms14rock03_n.dds (39BDE650)Textures\rocks\ms14\greatforestms14rocklichen01.dds (1E761BC9)Textures\rocks\ms14\greatforestms14rocklichen01_n.dds (155550D3)Textures\rocks\ms14\greatforestms14rockmoss01.dds (93363314)Textures\rocks\ms14\greatforestms14rockmoss01_n.dds (52014935)Textures\rocks\ms14\greatforestms14rockmosslichen01.dds (A8452616)Textures\rocks\ms14\greatforestms14rockmosslichen01_n.dds (7C707136)Textures\landscape\landscapewaterfoam.dds (F223F18B)Textures\landscape\landscapewaterparticles01.dds (04C2B6F2)Textures\landscape\landscapewaterparticles02.dds (F3A45952)Textures\landscape\terrainanvilstreet.dds (9F32E3C5)Textures\landscape\terrainanvilstreet_n.dds (D792CF59)Textures\landscape\terrainhdgrass01su.dds (7E4F0D59)Textures\landscape\terrainhdgrass01su_n.dds (023B8F2F)Textures\architecture\ships\grate.dds (214639BC)Textures\architecture\ships\grate_n.dds (328A026E)Textures\architecture\ships\metalrailing01.dds (2313F640)Textures\architecture\ships\metalrailing01_n.dds (403C44E0)Textures\architecture\ships\piratecircledetail.dds (A6155E54)Textures\architecture\ships\piratecircledetail_n.dds (89545567)
Quite a few Sach rock meshes use absolute texture paths instead of relative ones ("c:\program files\bethesda softworks\oblivion\data\textures\landscape\terrainhdgrass01su.dds" instead of "textures\landscape\terrainhdgrass01su.dds" and so on). This leads to missing ("purple") textures for people who don't have Obllivion installed in the exact same location (like me; I have it in "D:\Oblivion"). This includes:
smallplateauwgrass.nif and smallplateauwgrass_far.nif
smallplateauwgrass1b.nif and smallplateauwgrass1b_far.nif
Your ESM modifies the levelled lists LL1BanditBossLvL100, LL2MarauderCamp100, LL1WildernessPlains, LL1WildernessValley, LL1WildernessForestMountain and LL1WildernessMountainsSnow. I would suggest making a copy of those for your own needs instead of modifying them. Also, you modify the default Black Horse instead of creating your own (its name gets changed to "Nightmare", and it's made essential). Again, making a copy would be the better idea.