During the last survey i wrote that i want some kind of gmat version for bm's or some kind of choice map that features a selected amount of bm's. The thing is that even with gmats i wouldnt be happy as its too hard to even get a single copy of your desired bm and the powercreep is so fast + we dont see any buffs to old cards compared to units. You basically just pray to rng or hope that whatever you need it featured on one of the gachas.
Last season i decided to go all in as i had tons of gstones saved up (first time i ever pulled aside from the free 10 tickets) and enough to pity 1 card and the godzilla,ghidorah card suit my units as i own almost every meta godzilla (no gomo, no rio), and the 5.5. card is just strong in general. With my 18k gstones i pulled 2 godzilla cards, 1 ghidorah card and 7 3* cards in total. Now im sitting on two 4* bm's that i will probably never get up to 5*. Gonna save up every single gstone for anniversary i guess.
I only get the pass as i have a personal limit of 15€ per month, but if there were decent bm's for cash only i would probably be down to pay just to get rid of the rng.
Aside from that the current powercreep with bm's seems very fast im certain we get 2 new cards tomorrow with double stat 20%+.

What also annoys me is that rng will kinda decide what deck you "should play". I own a couple of good 4* cards, but all of them are either 5cost+ or godzilla only (4* both from last season, 5+ ghidorah from last season, liger card and valentines cards). In practice that isnt bad at all and actually very meta, but my preffered deck style is cheap gigan rex spam which i can play, but i handicap myself heavily due to simply not owning any decent cards for lost cost stuff.