Surrender Request Box - The pop up is entirely too large. It could easily be half the size and still function well. Also the duration for making a decision and after a “no” decision is made too long. All of this can impact a team fight.
Surrender Etiquette - Don’t be that teammate who dies first in a 5v5 fight and immediately ask for a surrender when 4v5 is going on. It’s really disrespectful.
Suggested fixes - Shrink the pop-up. Put surrender pop-up on a 10 second delay. List the person requesting surrender with a hero icon.