Hmm It's quite interesting the new changes that are going to happen to the transformation system, personally I only have one thing that I hope is changed a bit:
The dominance effect it seems it could be better in the new transformation system, I would change it to the following:
-Male:
*At 20 dominance move from male to sissy
*At 60 dominance move from sissy to male
-Transexual:
*At 20 dominance move from trans to sissy
*At 60 dominance move from sissy to trans
-Female:
*It would be better to create a new stat just for the MC called intelligence, having a high intelligence could be useful in the sense that the player will receive hints about what would happen on some event related options and make it harder for the player to be fooled into doing something, while having low intelligence the player will be forced more often into many things without his approval and in the case of female if intelligence falls under 20 the player will become a bimbo.
I don't think it makes sense that becoming a bimbo is based on being submissive, you can be an extremely submissive woman without any problem, but sissy it makes sense because basically being extremely submissive is the definition of it.
Another thing is that I think it makes more sense to be very submissive to become a sissy, a male can be submissive too and it feels too little range, even more if you think that you start at 50 dominance which is neutral, being a bit submissive shouldn't make you be a sissy, but being very submissive yeah.
I don't think that shemale needs to come back in the sense that you can do the same being a transexual and now that you will be able to have bigger boobs with serums it doesn't feel necessary anymore.
Lastly I recommend a range of 40 points rather than 20 so that the transformations doesn't feel too fast or it becomes a mess.