So the idea of an after-tax salary cap isn't completely insane. The notion that certain teams have an advantage because they are in low or no-tax jurisdictions is based in reality.
But it is so much more complex than that.
1. Remember players pay tax based on where they play games, not where the team is based. So even if you play in Florida, you can still be taxed on your road games in taxed jurisdictions. So you're going to have to adjust the "after tax salary cap" every season for every team based on your road schedule.
2. Teams like Florida perennially suck, despite being in a no-tax jurisdiction. Boston is killing it this year, despite Massachusetts being a high-tax jurisdiction.
3. Why limit it to only tax rates? Why not adjust the salary cap for being in a warm-weather versus cold-weather city? Big market (and thus big endorsement potential) versus small market? Canadian versus American city? Original
So I get it. I'm a fan of the Winnipeg Jets. It perennially feels like the deck is stacked against the Jets: a small, cold, Canadian market with no winning history and a high tax rate. It's no secret the Jets have incredible trouble signing high-profile free agents. I'd kind of love it if the salary cap could try to adjust for all those factors. But I can't imagine it happening. And in a year like this, with the Jets battling for the top of the Central, perhaps it isn't as necessary as I sometimes think it would be.