The wishbone formation used by the Indianapolis Colts is more than a gimmick. Consider it protection against injury, which is better than wishful thinking.
NFL speed on D can usually negate the wishbone, like it negates the "wildcat" aka single wing, due to an inherent imbalance toward the run.
Defending multiple options requires some discipline, though. Georgia Tech regularly runs a triple option offense having many wishbone concepts, and even athletic teams are often not mentally up to stopping it.
The first half against the Dolphins felt like they were running the wishbone. I really don't think I can hack that for an entire game never mind season. It was boring to watch. It's fun when mixed in but using RPO/WC/Wishbone type offenses all the time is like watching grass grow.