This is probably just aesthetic or might have actual benefits or QoL for some players:
Allow Runic Invocation’s icon to change/update depending on your current held runes so it might be easier to tell what would be cast if you press the button. This will also allow players to see the invocation’s tooltip in the game without having to check lastepochtools.com or other external sources (though it usually provides more information).
Although this means EHG might have to come up with more unique icon designs. But in lastepoch tools, I think there are already unique icons for some of the invocations. At least I’ve never seen these icons before.
I really didn’t know about this, thanks for letting me know. But:
Yeah, having to hover your mouse there can be really annoying during combat. Not only you give up your offense a bit but also your defense in case you will have to teleport away from danger.
Of course, this won’t be a problem too much for people who only use a few invocations or those who have memorized it already. But it would really be a good addition imo if they implement this. Or maybe just put the invocation icon next to the runes above your character’s head.