No money to be made? No incentive to make it easy. Best live with it.
You make it sound like mod makers don't try to make mods easy to install, and that is completely wrong. The creators of OBMM and Wrye Bash have spent countless (surely thousands) of hours making those tools as good as possible, and mod makers generally do their best to make their mods as easy to install as they can, and as compatible as possible. I have surely spent several hundred hours on install scripts alone, hours that are spent for one single reason, to make it easy to install mine (and others') mods.
Personally, I would heartily welcome a well-made compilation, but I scorn the creator of the FCOM superpack and many of the users that have commented on his forum, as they have absolutely zero respect for the people that spent thousands of hours creating those mods.