If you find that using git is taking up a lot of your time, the first thing you should do is switch to a good GUI, which saves 90% of your time anyway. Automating the fastest and easiest part of using git is penny-wise and pounds-foolish.
A team can and should work out their own best practices. A git prepare-commit-msg hook can provide a template for message conventions. Perhaps there's room for a tool or UI enhancement to provide additional guidance.
Good GUIs roll up multiple commands into easy actions and can even automate your team's workflow.