Don't think its a good idea at all this game is already too open you can see rune level, heroes, blacksmith lvl everything but their formation which determines the winner most of the times. Now if you will be constantly testing you can find the weakness easily in players. We already know what each hero does and what runes do so you need to use your brain and use that information against players you wanna beat not be constantly trying everything against them and then see whats best. Some players are smarter than others and if this is introduced that won't count for anything then