Two main houserules our group is using, that I am getting to fully see in action and evaluate as the campaign is progressing.
Payment: Add street cred as a multiplier on the pay scale. Not sure if there should be a cap for it, as it may get out of hand, but the group is only around 30 karma currently.
Technomancers: Adjust priority down 1 step. (IE. Spend B to get Technomancer A).
As there is now both a techno and a decker in the group, I finally get to evaluate that change alongside its fair comparison. So far, it has not seemed to push the techno better than the decker. They both do different things well.
The problem with Mystic Adepts is not in their power with magic, but that they seem to be the absolute best route to do a lot of other roles well. Best hacker possible, mysad. Best out of chargen? Also a mysad. Fastest character out of chargen? Also a mystic adept. Pretty much whatever niche they pick, except mage, they seem to be the best at. Granted, I have not had enough in game experience with them to see if it holds up in actual play. The one mysad in our game was trying to be a mage, and disappointed with his success at it.