You're not off to a good start in a debate when your opening salvo includes the phrase "politicized weasel-wording". I'm not a politician. I'm a gun owner who thinks it's okay for there to be some restrictions on gun ownership that I would also have to abide by because I genuinely believe it would make things safer.
Think for a second about why you chose those words instead of simply asking, "what do you consider to be 'common sense regulations'?" Are you subconsciously (or perhaps intentionally) trying to antagonize me by being pre-emptively dismissive of whatever I have to say next? That's usually the case in these discussions, in my experience, and if so, there's no point in continuing at all, because you've already made up your mind to disagree with whatever I have to say.
But in case I'm reading too far into that remark, I will share what I consider to be "common sense regulations":
I think a permitting process should be required for all gun ownership that involves a thorough background investigation. That's for all firearms -- long guns, pistols, all of them. You should need to present this permit when making all further firearm and ammunition transactions, including private party transfer and at gun shows.
Usually the immediate rebuttal to this is "well the Constitution says I have a right to guns!" Setting aside the semantics of the second amendment and our interpretation of what the authors meant by it, the end result of this proposed permitting process is not actually much different from the way things are setup today. Currently if you're a convicted felon you can't own a gun. The only difference is that for things like rifles and shotguns, law enforcement today doesn't know you own one since there is no permitting or registration process. The only difference is that instead of taking away the gun when you're a felon caught with one, you just aren't able to get it in the first place.
The next rebuttal is that now the government has a list of gun owners with this system that they'll use for whatever nefarious purposes you can imagine, but you're a fool if you think they don't already have this information. Your identity is sent to NICS currently when you buy a gun, and there's no way they aren't logging this information already. The only difference under my plan is that this registration would be more transparent, and you get an ID card proving you're fit to own a firearm.
And hell, we're all tech minded people here. There's no reason why this whole system can't anonymized in a blockchain or something like that.
Private party transfer and gun shows would be a bit trickier to regulate, but if the plan is universal among all states, then you can simply say that if you are the registered owner of a gun and it's used in a crime, even if you didn't fire the gun, unless you processed the transfer you're personally liable.
And really, that's all I mean by "common sense regulations". As I said, I'm a gun owner and I would be happy to live with this system. That is, knowing that everyone else is subject to it as well. The problem is that such a plan would need to be instituted nationwide, otherwise it's pointless since you can just drive to another state and bypass the whole thing. In the minds of most gun control advocates registration = loss of freedom, as opposed to the minor inconvenience it would be for law abiding citizens, so I doubt it would ever be possible.