So basically I feel that T1 gameplay can get pretty boring over time, as there are so few units that every T1 game is basically the same. Particularly bots. I play a lot of 1v1 and this is especially true. I feel like adding more niche units, that you wouldn't want to mass but would be good for very specific tasks, would help to add dynamics and therefore more enjoyment/variety. For example, Armada bots has 2 additional units that have no counterpart, Centurion and Tick. Centurion is one of those units that isn't that great tbh, BUT it can be very useful/powerful in certain situations.
I know that T1 is supposed to be more simple and T2 increases the amount of complexity to combat. I am just brainstorming because I think that more units = more interesting games, less of the same. I would also like more T2 units lol.