Need a 'Try Champion' Mode
...With unlimited gold and you start at lvl 18 against bots (you choose the difficulty). That way you can experiment with builds and try out new stuff without other people QQ'ing and trolling at you.
Maybe even be able to build your opponents...So you can test whatever you are testing in a variety of scenarios. Idk, I think it could be extremely helpful for both the community and the game itself.