OK, DP... here's your million dollar idea:

Make a remap of the Satanica M3 Gens to accept M4 textures.

As those of us who render male characters are aware, there is STILL no good genital figure for M4 that compares with all the features and morphs built in to Satanica's big member. It can be made to fit M4 no sweat, but it can't use the textures, leaving the user to find one that "sort of" works.

Of course, this may already exist, and I don't know it. But I have googled it, and got no results.

So. How about it, oh King of the Remappers?