Is there an easy way to pick out a unit you want to use an ability on? For instance, with Apoth heal, I find myself hunting for the right squad in a mess of melee. Back in WC3, you could just hotkey heal and then click on the portrait of the unit you wanted to heal (selecting several units pulled up portraits with health bars). Now, with my Apoth two ASM build, I have to pick the right squad out of the mess and click on one of the units.
Particular keystrokes, mouse click order would be greatly appreciated!