[img]http://media3.picsearch.com/is?jaR2cMaiREDP1IqacxfD6xOiTLepDTqdGbMij3Ovz4k an instant check is to check out posted tier lists online. A straightforward Yahoo of "Idle Heroes Tier List" will show many results and views from their writers on the comparative strength of an hero. There are lots of tier lists to help you select which heroes you ought to be putting your time and effort into, so don't take the term of the first list you read.
PvP or PvE
Opt for whether you want you team to be proficient at PvP (player versus player) or PvE (player vs environment).