Ok!
While this sounds great, I'll have to step in and say nobody is gonna code this. Plus, even if you do put a limit on the requirement to be on blue to prevent the claims of "Freekilling and New wardens" you still have the issue here buddy. What if those 10 hours of jailbreak hours are met? They are still gonna be considered as new wardens since it is their first time playing warden after reaching that requirement. Plus, its not gonna stop those freekills at all. Freekills are inevitably gonna happen at some point and certainly putting a hour requirement certainly doesn't help. Yes you are solving an issue but you are adding an issue.
You are gonna create a world where the blue team are just regulars on pandas and thus decrease the playerbase. What if those regulars aren't on most of the time? Is the blue team gonna be a ghost town then? I'm sorry but I'll have to decline this. A poll isn't needed.
Declined, Thank you for the suggestion anyways.
Onward!