Hello @The_M0ss_Man 
And thank you!
I have a couple of ideas for making every game different when playing against someone. One idea is to have different Kaijus and Human units which have completely different playstyles. Kaijus that spawn “Kaijulings” that roam the city or a Kaiju which move on top of the houses and can only attack adjacent tiles. Human units could be different movement types, or use the environment in various ways. There is a lot of things you can do with this concept I think to make it very interesting.
Another idea I have is for players to have different loadouts, which gives them the option to customize their own character abilities by choosing from a list or unlocked abilities. This would make every player encounter even more unique and interesting.
The most important design rule I have for this game is that the players play with “open” cards. Players should know all of their opponent’s abilities, so that it is possible to predict and counter easier. If you play a match against someone and see a “pre-designed” Kaiju, they will probably know right away and think: “Ah, I know exactly what they do, so I should play like this”. For loadouts it would probably take some time to look at their opponent’s abilities and figure out a strategy for it hehe.