You certainly have more class than the Patriots putting a 16-0 regular season banner on their rafters.
I've never felt this great about a 1-2 team, and I can't remember the last time a win felt this great. At the same time, I was waiting for the snowplow to come out!
Celebrating an AFC Championship and a great regular season is classless? Missed that memo. As mention earlier, many teams celebrate Conference/Division/Pennant winnings (depending on what sport you're talking about), that's what that banner is for.