DS's big problem is that the paths that are still out there are ones that people aren't all that interested in. Very few people want the Eric friendship path. Apparently a fair number want Olivia, but not enough to warrant DS actually working on it at all recently. People made their choices, to get rid of Eric, or to pick Lisa as GF over Olivia. Now we get no choice at all. The future is a family porn empire, and always will be, because all choice and ability to control your fate is being stripped from the game.
Well his big problem is he hasn't finished even one of those paths yet either....Eric Path was completed...Eric Friend has a completion you just have to start hating him as you should of in the first place.
As for Lisa merging Olivia...How hard is it to have her tell max that her friend from school is coming over and starting at the pool scenes?
Olivia to Lisa requires a few NEW scenes but only in addition to the scenes that already exist in the sleeping pill events.
a Game with multiple paths that never meet are all just separate games and like developing 5 games at once. He has enough trouble with the few paths he has to bring new content, adding more will just make walkthroughs, Helping others and making enough content per release to avoid complaints impossible.
Time for him to merge or finish the paths he has and then if he wants to make another branch make it ONE branch that he can give equal development time to per release, make it last only two or three versions and then wrap them up.
In a way each character is their own branch and he doesn't seem able to update all those let alone adding more.