Xan22-You pretty much can't do pocket rollout anymore and pocket has to play second roamer
The pocket roll out long existed before the unlock.
You can't compare the crossbow to any other unlock in TF2. If you do, the closest thing you could compare it to is the gunboats. They both increase the pace of the game, and a lot of people like that. At the same time, if you suddenly banned gunboats, I bet a lot more soldiers wouldn't want to play either. The biggest problem though is that gunboats is close to optional, there are soldiers who succeed beyond the unlock. The crossbow doesn't fall into the optional section of unlocks. You're not sacrificing just rocket jumping capabilities. You are sacrificing your team's health, aggression, and momentum. You also get uber % on top of this. I truly believe that how necessary the crossbow is that it's not only bad for competitive, it's bad for TF2 in general. The unlock is necessary in every single setting you play medic in that it's actually ridiculous.
I don't care if it's banned or not as I enjoyed medic before the crossbow existed and will continue doing so. It's really on Valve though, as is most of anything involving unlocks. I would like it if they just buffed the syringes to be as strong as the crossbow.