Ooh, five upgrades would indeed be very interesting. And I just got myself thinking… what if the 5th upgrade of them is a big buff for the tier 4s specifically, but you can only buff one of the tier 4s at a time? Might be a bit limiting, but I think it could be interesting to see people working around what tier 4 they value more either for a certain situation or map or in general, and also it would add another layer to building-switching mid-game, where if you have both tier 4s you could switch them for rounds where one is more valuable. It could be something to consider
Also, and I apologize if I am overstepping, but would you allow me to continue this over Discord? Just for more solid back and forth. It’s alright if not, I just thought it might aid things