I'd love to see trans male characters (or at least one) aka a 'cuntman'
Also more inflation without pull out, like knotting and staying knotted for a bit.
Would love to see some urethral stuff like tongue in urethra or urethral fucking/cock-fucking.
mpreg is fun but not for everyone and also maybe characters with large balls but not large cocks, like tanukis, normal cock sized for the game but big balls :3