I think players who ECU for a team should be able to have their stats saved for that game on their Player Card. It's a bit of a bummer when an ECU does very well in their games but doesn't have the numbers to back it up. I'm sure you've gotten this before but it should be something implemented for ECU's who put in the extra work.
if Someone wanted to prove there stats they still could it’s all documented and there’s no reason guys can’t track there own stats
Season 18 - IA Wild - Captain/ CAR Hurricanes Season 17 - SA Rampage / CHA Checkers
Season 16 - CHI Wolves Season 15 - ACA Titans - Owner
Season 11 - BAK Condors / CHI Wolves Season 10 - MIL Admirals / NSH Predators
Season 9 - ADR Phantoms - Captain VGKHL - Espoo Blues