As a 20 year dungeon master and D&D twitch streamer, please make it more apparent when I have and do not have advantage. I tried playing a rogue and it is never notable when you have advantage, the bottom left has a little symbol accompanied by a % to hit, but I want it to say large and in the middle lower section of the screen "ADVANTAGE" or "DISADVANTAGE" or maybe even gray out the sneak attack buttons when you don't have advantage. Also, the web overlay on the map is not great.
I hope your idea is implemented. You don't know where to stand otherwise.