We've always maintained that the Second Amendment is not about duck hunting. The BATFE arbitrarily invents policy with no oversight other than some administrative opinion (unelected and unaccountable) in regards to 'sporting purposes'. Right now, they can just decide whether you go to prison or not on a whim. They write one opinion, send out a useless letter, and then raid a location anyway for reasons that contradict their non-binding little opinions. They need to have this power taken from them in no uncertain terms.
It will change everything.
The “sporting purpose” issue is encompassed by the “strict scrutiny” principle. The standards defining “sporting purpose” do not meet “strict scrutiny”, thus they will (on subsequent suit) fall. The upside is that import restrictions and other stupid limitations will be eliminated; the downside is the BATFE could throw a fit and declare all shotguns NFA “destructive devices” (bore >0.50”) as they could not use the “sporting purpose” clause for exemption thereto.