I would wager money that your flow won't work out the way you think it will. Friends of mine sitting at 4-6 year seniority are looking to leave envoy for the mid-level majors. One already left for JetBlue.
American has NO obligation to flow you up if the staffing at Envoy goes to hell, which it will. You're a damn moron for thinking you're in any better of a position than someone at ANY other regional out there, Mesa included.
The industry is freakishly cyclical, and when it goes down again, you can kiss your flow goodbye. Before you know it, you're the grey haired 62 year old E145 captain that you fly with on every trip.
Flow through programs are carrots. So hang on to that precious carrot... But if I were you, I'd stay humble, turn your douchebaggery around, and pray every day that this industry doesn't implode again BEFORE your precious flow date. You're lack of awareness in how this industry works is alarming. Nothing is guaranteed. Not even at Envoy.