Kalista
So Kalista is a fun champion albeit people say she's not so great at the moment because her nerfs but still can be fun to play and absolutely devastating in the right hands. I think that two changes could make not only more fun but easier to pick up. These changes are just for convenience sake. I think giving her e a range indicator like Twitch's would be right up her alley. I think its ludicrous she doesn't have one already. The other change would be something of an execute indicator. I think the best form of this would be a form of Tahm's e passive. Her spear stacks could turn enemy health to blue indicating exactly how much health Rend would subtract from the enemy's health pool. Whether this is feasible or not i have no idea but seeing that it has been implemented with Tahm it shouldn't be too hard. But what do i know? I really would love to see this implemented in Kalista as they keep focusing on making her less devastating for pros but end up nerfing her for us baddies. This would be a huge upgrade without actually touching her damage