Keeping the community/followers/players engaged during the creation process is best done by adding in-game implemented, addicting minigames with high replay value (and possibly a high-score, or item rewards in later stages of development, like in fuuju hime.
The possibilities are nearly endless; hitting mushna's head with cynthia's hammer in a hammer hitting game, arousing Wuelie to the peak in a dance/key-pattern game (well, similar to the sex mini-game, I suppose), making catera evolve to a butterfly in a shoot 'em up mini-game; hell, do I know, but probably best to start with the easiest to code; which probably would be to expand on the implemented key-pattern minigame...
But, nnhh....blimey, I didn't want to give any suggestions yet...my apologies mofu, I was overwhelmed, hihi... ^ ^'