You need to add additional animations for your heroes whenever time runs out. In the Arena battles, all you get is a Time's Up message; no death animation or anything of that nature.
You know how in Capcom fighting games, when time is up, a hero does their winning pose while the losing party displays disappointment or failure. That has to be in there. Here's a video example from Street Fighter IV:
I'd like to see how heroes like Elric, Vincent, Ethera or Flora act when time runs out, instead of just freezing in place (or freeze sliding, a reoccurring bug in which a hero backwards or forwards out of the screen caused by a knock back move, eg. Elric's Uppercut).
The time out animation poses would only appear in the Campaign, Prophecy Pool, Arena and Epic Arena.