I'd do a full community balance patch wishes investigation, relate the responses to existing in-game data metrics (e.g. winrates, use of units etc.), produce a patch based on the quantified results, release an open alpha mod of the patch, and iterate mod with results of the community/ingame metrics for at least two months. Then implement patch live. Rinse and repeat for at least six months. Get community and players happy.
I'll add: incentivize people to join the alpha.
-Add decals/faceplates
-Give whoever gets (insert random number of matches) X amount of dogecoins for the new warspoil system (if they implement something simil to what it was shown months ago) so they can unlock whatever they want.
-Heck, make a tourney out of it. Even if you give small prizes as bundles, you might have top ranked players finding what's abusive on that patch.
TL;DR: It's hard to test things if there is little to no one of equal skill playing