I had installed Elessar_VPR's http://www.tesnexus.com/downloads/file.php?id=4520 but only used the mage guild TP before redoing my game.
I notice that all 3 make mention of horse/carriage/ship and one person asked on http://www.tesnexus.com/downloads/file.php?id=21999 comments if you actually move in "real time" or just fast travel when using the service (like using a mage teleport in Elessar's version).
http://www.tesnexus.com/downloads/file.php?id=31991 says for horses you get a guide that goes with you and you can pay him like a taxi driver to stick around longer.
For anything that isn't a mage TP, do you actually move on a ship / horse / carriage and can watch?
I also noticed the OBSE mod support that includes these mods that I have: Arthmoor's villages (I have all of them), The Elder Council (Arenthia), Elsweyr Anequina, Bartholm, Knights of the Nine, Sutch, Fort Akatosh...I have downloaded but not installed that are listed: Glenvar Castle, Battlehorn Castle, Integration (guild guides are integrated into the guild guide quests).
I wonder if all these are compatible to sit side-by-side like competitors for your business?