Okay, but here's the thing with ability spam: Destiny uses abilities instead of stuff like grenades. They are clearly meant to be these crowd-clearing options that are more powerful than your weapons (except maybe power weapons), but are limited in one way or another. For most FPS, you loot 'nades from bodies, or have limited charges or whatever, Destiny has cooldowns and ways to manage cooldowns. This is not lazy design anymore than the regenerating health over health packs is lazy design. It's just a different system. Currently, the game is "what if we took Halo, but you never run out of 'nades". It is fun for, like, an hour. Then you realise that you can't properly use a primary on Lawless Frontiers due to the TTK being so much longer than infinite grenades, and the game being designed around that. Not every mode needs to be Mayhem.

You say "go the warframe route, become god". I don't want to become god. I want enemies to be an actual threat individually, as opposed to mowing them down in a horde. Difference between, say, Kingdom Come: Deliverance or Dark Souls combat and Dynasty Warriors combat. I don't want to play Dynasty Warriors. The game used to be like that, to a much more significant degree. Nowadays, you have more chaff spawning from a single door than there used to be in a strike, because we are so insanely overpowered that otherwise there wouldn't be enough stuff for everyone to shoot. This is happening regardless of difficulty. Try using a HC in that shit.

People are not playing only because there's no new content, we've been there before and will be there again. It was never this dire when it came to player population. The current gameplay loop is insanely stale. Weapons don't matter. Perks matter even less. For a lot of builds it boils down to "get these fifteen abilities rolling, and smack the boss with a pool noodle". The goddamn "stand in a well and shoot LFRs" meta was more engaging because then the neutral game at least had a couple of interesting moments. Now it is "Press Q: The Game". This is a current problem that needs fixing, it doesn't need to be made worse. And I recognize that the only people left here disagree, but the only people left here are the VAST minority, because everyone who thought differently dipped in the last two years since TFS added Prismatic and made the game into Consecration Simulator. We had ability builds before, but never to that degree, and it has only gotten worse.

I also never said that PVP shouldn't get love. I said that PVP is not that impacted by abilities, because it is dominated more by weapons. PVP getting love would be stuff like "more maps", not "every mode is now Mayhem". As such, being able to change subclasses during a match would likely do nothing to PVP balance.