Hm? Dancer and Goth have some special endings, but the other four are also available.
The form you get is determined at game start, so a new game will get you a different doll. You can also use the debug command [pref x] where x is princess/goth/dancer/geisha/bride/punk.
The resin titan thing is just a minor thing. It might get changed, might not, it's not exactly a dealbreaker. Dev time is limited and all that.
As of v1.01, you can re-view the ending sequences for all endings you've unlocked. It's on the options screen, there is an "Endings" button in the bottom left.