Smurfing is going on already and it really doesn't matter. Also wheres your statistics pointing towards this not be sustainable? I can point to SC2, CS:GO and LoL for evidence of ranking systems and leader-boards being successful and sustainable.
but this time around smurfing was neither institutionalized nor as systemic as it was in CoH1. it doesn't matter to you, because you can deal with the best players, whereas such disingeniousness has a seriously negative impact on less experienced players.
c'mon hans, to even slightly consider CoH2 as comparable to the largest multiplayer games perhaps in history up to this point, is slightly suspect. we have a quotient of their active playerbases, and more prestige items for the top end, to me, sounds like nothing more than an appeal to elitism.
a discussion about ladder systems/rankings is you moving the goalposts on me as well. that's a whole 'nother discussion which i will entertain only by saying, consider even @ the <1000 level how long it can take to find a 1v1, and then ask yourself how long that would potentially take if we were to further segment the player pool, and then ask just how keen people would be to wait for a game nearly as long as it would take to see one to its conclusion. this also harkens back to the discussion of disconnects. the MM system would be fine if the playerbase was large enough to support it, but these drops occur often due to gaps in skill perceived or otherwise, simply due to availability.
and to everyone calling for the return of the rudimentary CoH1 system: did we even have any understanding how it worked? beat players higher rank than you, get a better badge, lose; face demotion. is that really any different than what we have now, only it's a number instead of a picture, and slightly obtuse to find? -- i don't think anyone would be averse to making the data in the current system more readily accessible. display the leaderboard rank at the end of the game, job done.
Explain Observer mode then and the thousands of replays in the replay section consisting of a majority of game modes that are not 4v4s.
how many of the 4v4's go un-uploaded, or un-casted, partially due to the difficulty in castability, but also due to the stigma of 4v4 not mattering, a stigma mostly perpetuated by duelists, and those who want such a prestige based system.