DarkWhisper WANTED to do an Apollo plugin, but because of his custom bodyparts, it would have been A LOT of more work than any of the previous plugins.

So he wanted to make sure to at least brake even, and asked for a minimum of 250 votes.
(And we all know that saying "Yes, I´d like to buy that" in a forum, and actually BUYING an item once it is released are two completely different things)

And what happened ? He got a measly 170 votes.

So unless you are willing to pay $100 for an Apollo UTC plugin, forget about it.

Supporting anything besides V3,A3 and M3 as a merchant is like flushing money down the toilet.
If the mainstream figures don´t do it for you, be prepared to either pay a lot more for support, or start to learn to create your own content.
I spent a lot of time with Posette and Dork because they are quality meshes, but it was strictly for fun.
Had I wanted to make money from my work, I wouldn´t have touched them with a ten foot pole.

As for remapping figures, that, too, is A LOT of work.
I read that it took AprilYSH weeks to do a single figure, and the enormous polycount of todays figures doesn´t make such a task exactly easier.

I sure wish someone would remap MIKI, James, Jessi and Koji to V3 and M3 textures.
(Although I´d rather have them converted to V2 and M2 to keep them compatible with the other remapped figures.)
But doing so would be strictly a "work of love", as I doubt one could make enough profit from it to justify the time needed.
Also don´t forget that Unimesh mapping is also protected by the DAZ EULA.
So a MIKI that can take V3 textures would have to be encoded against V3, while a MIKI remapped to V2 wouldn´t.

And EF will soon re-release all of their meshes with a completely new mapping and joints, making the "old" meshes obsolete, anyway.

Stahlratte