I want it for a long time now, but for different reasons. All of these browser limitations (mainly input lag, that caused extrapolation to become a thing) would be gone with a properly made standalone app, but that would mean basro would have to rewrite the whole code, that's not a small job. If we reach a point where there's little to no input lag for everyone, then extrapolation is not needed - no one will complain, because the game will be playable as is, but he could still leave extrapolation in the game to add some variety (30-50extra max, or add a feature for host to set a max number or make extrapolation number visible next to players' names in the menu).
But yeah... I agree that only a few people still enjoy playing fs, it's like you said, always the same, boring, repetitive, same people abusing same things, playing risky on the verge of trolling is the only way to enjoy it, but most of us rather focus on officials, where winning actually means something, tho with meta being changed in recent times, even the gameplay there isn't so enjoyable and you don't profit much from playing smart anymore, but oh well, we'll see if basro comes up with a surprise.