Yeah, it's definitely hard to compete with those MM exploiters for a kyber top spot. Not impossible but very hard thx to the limitation of scoring undersized (and therefor high banner) wins when you have a "normal" developed roster that shall also succeed in other game modes such as TB.
I'd love to see 3 more divisions added on top of the current div 1 and an overhaul of the current MM towards an Elo system. Eventually the best players of each division would get matched against each other and those who keep losing (because maybe they have on of these inefficient rosters with lots of fun teams such as relic jawas) can have some fun again being matched against "their kind".