I cannot emphasize how much this kills the game.
There needs to be a chat box that stays on the screen with messages. I've missed messages from allies asking for help countless times due to that chat screen fading away so fast and being invisible in general.
It's really hard to coordinate attacks with teammates when 1)the chat system is a complete failure and 2)there's no minimap pinging. No, we're not gonna press enter every 30 seconds in the middle of battle just to check if we missed a message.
Please work on a better implementation.