Use a sim and test your hypothesis. Or, just try it and see how it goes. You aren't crazy for wanting to try something, but at the same time our forums aren't the place for you to get a pat on the back over your grand idea. Just try it out. If you want to post the results of your test after using objective tools (WOL/Sim results, etc) -- that's fine.
Will there come a time where stats will get so high, that raiding with an agility potion is better than an ap flask as feral dps?
My stats fully raid buff and with horn.
As I read it I would gain rougly 1% more crit with agility potion.
At the moment I can not see any difference in my dps with or without a flask. I am at 8,5k-9k dps on a boss like suarfang. I have been arguing with my raidleader about using potions insted of flasks the past week he stands firm on using flasks.
Am I a total nutcase because I want to try this out?