all of them i think they need to add but if not that is ok
1. i think they should add day and night spawning say like zombies dont spawn in the day.
2. if techne is coming back then add more leg movement like a spider that uses 8 or 6 legs (i forgot how many legs were on a spider in minecraft) and like a pig with 4
3. add more mob modal selection so if some one uses mcskin they have more options.
4. pls bring techne back it was the best for alot of people
5. sorry i forgot about this idea but its guardian type its like passive or flying mob type but it attacks anything that has mob characteristic.
6. this one is sorta mob related but its custom mob egg looks so no more the normal mob egg look(this one was late too)