That's pretty list you have there. In case you would be still looking for some suggestions, I would have some:
Graphic Herbalism has a lot of http://www.nexusmods.com/morrowind/mods/searchresults/?src_order=1&src_sort=0&src_view=1&src_tab=1&src_name=graphic__herbalism&src_language=0&src_showadvlt=1&page=1&pUp=1, including addons for Tamriel Rebuilt.
There is alternative to Neoptolemus' Undead mod called http://www.nexusmods.com/morrowind/mods/40085/? by Arcimaestro Antares
http://www.nexusmods.com/morrowind/mods/42125/? makes RM much taller. I personally cannot play without this anymore
Reizeron made also http://www.nexusmods.com/morrowind/mods/43488/? mod besides Flies mod
http://www.nexusmods.com/morrowind/mods/21372/? is pretty cool quest mod for more shady mage characters. I made a little patch that corrects some bugs - in my Little mods thread
You listed some of DarkElfGuy's quest mods - I personally really like http://www.nexusmods.com/morrowind/mods/22286/?
http://www.nexusmods.com/morrowind/mods/42928/? is quite nice little dungeon mod with reward
http://www.nexusmods.com/morrowind/mods/43496/? is pretty awesome creature mod
Since you included Book rotate in the list, there is also http://mw.modhistory.com/download-11-15101. It is made for older release, so it might not work with books added by latest versions, but still worth it I believe. There is also http://mw.modhistory.com/download-98-7023 mod. And I also made a little utility that will try to attach rotation scripts to weapons and books from all mods you currently use - link in my signature.