Thanks! I hope it works out like I am planning. Heck I can't wait to play it....
It depends on a large number of factors the largest of which are your Biology stat and specific equipment onboard the ship. If you have the right equipment you can introduce a virus (or analog) to change the DNA of your race (Thus modifying them). But this can backfire in a few ways if it fails and at least two ways if it succeeds. Modifying your "Tribe" only, or even just specific members to give them better abilities is also on the books, but again there are risks associated with that action. (since this is just a bonus on some actions)
Yes, It seems Chapter 1 has ballooned out into a massive chapter.
Split evolution, No it's not currently on the plan. The Plan calls for around fifty-ish variables to be tracked for the race, to have spit evolution would mean over a hundred Variables for very little gain, since planning for and making stories for a split Evolution would have to start early on in chapter 5.
This is in the plan. there are several planned events that involve randomly generated wildlife. and I have planned events that include domestication in several categories. Food (like Cows, Chickens, Pigs.), Protection (Dogs), Vermin Control (Cats), and Companion (Cats and/or Dogs). The MC can also suggest this as a solution to some problems.