Quick note about the Solemn Vow:
It allows medics to see the uber percentage of the enemy medic. I don't think it's that big of a deal but a lot of people (including I) were for unbanning the Solemn Vow when the Global whitelist was revealed but I think many of us weren't aware of that at the time.
I'm still all for unbanning it though. Promotes teamwork, rewards medics who maincall, will stop my medics from wm1ing at a scout with the ubersaw.
Sounds nice on paper at least. If it turns out to be aids it can just be banned again the season afterwards. And it will have nowhere near the impact of atomizer/base jumper while it's unbanned