Is your Heimdall not fully built? I would expect valk and carol to be generating blue unless Heimdall wasn't the highest character on the team.
I tried Kamala with BRolaris and while it does work it might be slower . One advantage is the massive health compared to Jugg1. I also tried Kamala with Polaris and Rockjaw with moderate success depending how fast you can flood the board with specials .
Been loving rolling through the Heimdall pvp with Odin and Shuri. Fortified tiles everywhere, combined with the natural healing abilities makes for very little health pack usage. It's not a "fast" team, but it has longevity and can win versus a variety of opponents.
HawkEyeball is a meta pick 2 , whose the best third, Apoc?
Anyone who can utilise red better than Hawkeye does. Filter power by red and look for those characters that fit your playstyle.