I think this idea might have been suggested before but would be nice to have some soldier stat grid where it's easy to compare all the soldiers stats at the same time. Something similar like Ultimate Soccer Manager 98 had.
so XCOM version would be. TU, EN, HE, BR, MR, RE, FA, TA, ST and PS.
Just a nicer way to look at the soldier stats to see who is best for what role instead of scanning soldier by soldier.
Also another suggested suggestion which I want to suggest again is a memorial wall to reminisce about fallen soldiers. (Unless it hasn't been suggested in which case I suggest that I suggest it)