Should I max rank all my 3* for arenas or not worry about it? I know it uses a lot of gold and resources. I haven't started act 5 yet or completed ROL or RTL. I have around 35 4* and only one of those are r5. Just trying to figure out the best strategy to start getting more champs as fast as possible. It's a struggle to hit 3 mil in arenas with current roster. Thanks in advance.