My Assaults go around carrying Shotguns which is useless while on overwatch.
Are shotguns useful in general? Or should I swap them out with Assault Rifles?
Right now my team is:
2 Heavies
2 Assaults
1 Support
1 Sniper
My Sniper does the most kills. Is this a good team configuration?
Playing on Normal. Not Ironman.
Assaults(with shotguns) are great, you just need to use their run and gun to flank and get really close to ET. Just don't get greedy, sending them out into uncharted territory early in turns.
What my roster looks like really depends on the situation. I think I had the same load out as you, except 2 assaults and 1 heavy, for a lot of missions in the past.