You need to do what you feel, but think about this.
Scores in 4.3 and previous versions were not realistic. Hitting 90% of your 40yd + passes is not realistic.
My teams have taken hits as much as anybody by 4.4, but I'm actually excited at the chance to play in games that are more realistic.
We're all on the same field, playing by the same rules. Sure, it sucks to have teams that were great under one version suddenly become cellar dwellers. A good coach will adapt and overcome, others will retire.
I think you're too good to just fade away. I think you can overcome.
Personally, I'm dropping some teams so I can spend more time on the ones I are about, until I can learn more about 4.4. I hope you'll consider the same, as I've always looked forward to facing your team.