I think you can make a pretty decent case that a 16" levergun chambered in .45 colt (or .44 mag but my preference would be the .45 colt, which has less recoil/blast and therefore faster follow up shots), without ANY so-called "tactical accessories" is still about the PERFECT home defense carbine for
most people (at least where overpenetration is not a great concern).
Light,
quick,
handy,
naturally pointing,
powerful,
big hole,
pretty fast,
low recoil,
low report/blast,
fairly good capacity,
politically correct,
fairly cheap to leave out of the safe in case it gets stolen,
and most of all, simple - the KISS principle at work, with respect to sights/gadgets.
Extremely reliable, too - more reliable than a semi, albeit by a tiny margin; then again you could show the corollary that a semi is only FASTER by the tiniest of margins, compared to a quick cycle of the lever.
About the only thing better than a 16" levergun in .45 colt (short of tacticool) in a home defense carbine, would be an SBR'ed 12" levergun in .45 colt, like the Mare's Leg with a stock.
YMMV. And I STILL prefer a shotgun or handgun for home defense, but this is IF you were designating a CARBINE as your go-to or your backup HD gun......
H20Man, Hardshell, and Gelgoog - sweetness!!