This is a summary of what features I think Halo Wars 2 should incorporate prior to launch. All other ideas and opinions are welcome.
1. Option to lock your troops up inside your base while being trained. This is an important feature if you are trying to protect your new units.
2. Keep the veteran feature. When a unit has been in battle and survived he can accumulate a set amount of stars making it progressively stronger.
These are the only two I can think of right now... If I come up with more if possible I will update.