Looking at the screenshots in this thread, I'm surprised how many people play with that
show casualties pop-up:
Billman killed by Swordsman
Swordsman killed by Pikeman
Pikeman killed by Archer
Archer killed by Knight
Crossbowman killed by Knight
Knight killed by Slinger
Here's why I don't like it:
1) The letters popping up are too distracting to me - I mean, I already have the enemy distracting me, I don't need another distraction
2) It covers a substantial amount of screen space (i.e. letters are too big)
3) It takes a bit from realism
4) It lowers my (real life) battle morale...
No, seriously, I'm sure many of you had a battle when you thought: ''Oh, this is gonna be easy.'' and, suddenly, you see 5-6
red notifications,
in a row, which are telling you that your guys are slaughtered.
You automatically lose some of your morale, since you know the battle is going bad for your army.
But when you turn that notification off - then you play like you always play.