I would prefer teams have a single color, so a quick glance at the map zoomed all the way out shows teams, not a mass of colors.
I think having the option to pool cash, upgrade each other’s stars, and control team carriers could replace sharing login credentials.
I believe one of the items on my wish list was seeing each teammate’s research status. Points and time to completion. Maybe next research set to begin after current research completes.
If playing in a locked team (preset formal with others locked as enemies) could we just do team tech? No need to share it. A player’s research points get contributed to individual priorities, but points and bonuses are applied to collective research. For example Hulk, LDG and I are on a team. Hulk is working on Weapons, LDG on Terraforming and I’m on Manufacturing. It increases our team totals for those research amounts. Then, if I finish early, I can switch to Weapons with Hulk and our combined points progress Weapons research even faster.