encourage breeding and safe sex: yes, that’s the intended behavior. at least one person in the pair has to have encourage breeding enabled. They do try to pair up with another “encourage breeding” if possible, but it’s hard to force since one might find the other ugly or something.
i would suggest not trying to go for submission genes right away, try waiting until you have a few dozen goblins, then turn on “safe sex” and encourage breeding for your most submissive goblins. after a few generations i find i can pretty reliably get goblins who are submissive enough.
I did intend to do art for the vore but I put it off and then got sick for a week, and i didn’t want to delay the update. Might get to it in the future, but I’m not sure how much more energy I have for this project. I also wanted to do big bellies for pregnancy and vore, but I gotta figure out how to handle the drawing order of large bellies, large penises, and large breasts so that they don’t overlap oddly. it was hard enough with just breasts and penises.
as for the animation and navigation issues you’re describing, i don’t think i’ve seen that happening on my machine. it’s possible that there’s some concurrency bug happening with the navmesh recalculations, although i thought i sorted all those issues. usually if a goblin is stopped in place it’s because they’ve decided to have sex (or vore or drink milk) and they’re waiting for their partner to be ready. you can see what their current job is in the goblindex. What batch setting were you using? Something could be going weird if it’s too big.