I find the suspect meta more fun utilizing my koko-medicham offense, so according to you, my anecdotal experience is enough grounds for a ban /sI'm not necessarily keeping my thoughts narrowly on metagross; moreso I'm making statements based on my experience in the actual suspect metagame. I'm a consequentialist at heart, so a key question along those lines is "does removing metagross make the meta more fun?"
Is it? What positive trends have you actually observed in the meta?
Removing megagross has allowed for a lot more variety in viable pokemon and viable sets. Mega scizor now has the breathing room to run swords dance and not just be a megagross wall, nihilego has increased in viability and is a potent scarfer...
checks to tapus (which people are sooooo afraid of if megagross gets banned) such as spdef jirachi, av magearna, av magnezone, and av muk-a have increased in viability...
and teams no longer have to dedicate 2-3 pokemon on every team just to deal with megagross.
Stall was an increasingly difficult playstyle, even before the suspect test, to pull off with the plethora of stallbreakers that have been added from ORAS to SM, partly in thanks to z crystals. With megagross removed, stallbreakers like lele, heatran, bulu, and zygarde are even more viable now as they don't have to worry about getting ohko'd by megagross. If you're struggling with balance or stall, odds are that your team isn't well-built or you're playing badly against defensive cores.
The ladder is young, anyway. You can't judge a metagame in less than a week.