That sounds fun honestly. I'm down
Absolutely, and it's a shame since it's actually quite fun, when it's functional.
My final thoughts are that such a mode must have rewards tied to it. In my opinion, PvP is dead because there are no rewards tied to it and matches aren't fast to access( you have to wait to find an opponent). People are also afraid to embarrass themselves in PvP, even more so when the game plays against them with the bad connection.
If anything PvP matches should at least reward Skill Points for the characters you're using. There's no easy way to grind that apart from dailies and upgrading fighters. This would give enough incentive to play it, since it also offers a way of obtaining fighters via CoC's Tributes.
I'm getting a bit off topic however, so let's stick to how we can incorporate an Infinite Mode