Honestly, I don't mind the gameplay all that much, I think the whole left to right thing adds a weird sort of strategy aspect you wouldn't otherwise get. Get one guy far enough forward so you can deploy others behind a wall sort of thing.

That said, yes. I don't really *want* deep gameplay from my web games, I have real non-web games for that. These are stuff I play while waiting for loads or spawns or whatnot in other real games.

(Note: I haven't made any attempt whatsoever to grind for gear, I just take what I get. So far the only "good" gear has come from the gacha, which I expect will continue to be true.)

And yeah, a way to quick play missions you've already done would be nice, though I can think of a reason why they may not have wanted to. It would make leveling underleveled maidens significantly easier.