You’re that confident in Scotus ruling an AR ban unconstitutional? I’m not. Arguably, the successor to Trump might not need new enabling legislation, if BATFE could be induced to taffy pull their reasoning on bump stocks to include all items that might increase the rate of fire for a semiautomatic firearm.
Even if the current Scotus composition would not be amenable to an AR ban, an expanded Scotus might. Especially if Ginsburg’s cancer starts acting like everyone else’s who had pancreatic cancer and Trump nominates another Justice before the end of 2020.
One giant difference between 1994 and today is the AR platform is unquestionably in common use. It’s probably the US’s most popular center fire rifle, in all its permutations. I think the oft-stated 15 million figure way understates the total number of functioning AR-pattern rifles out there, given the popularity of building them from parts kits and, increasingly, using ‘80 %’ receivers as the firearm.