I got some Kelty duffles from Sierra Trading Post for a good price and because they have no wheels or padding, they don't eat into the 50-pound allowance and they wedge into a rental car trunk MUCH better than a roller duffles.
11-pound roller duffles made more sense in the 70-pound-bag days, IMNSHO.
You know it's worth $2000. I know it. But a minimum-wage TSA screener or airport baggage handler probably doesn't. Thefts from luggage are up this last decade in part because TSA and the airlines can point fingers at each other and claim it isn't their problem.
A retired-young dot-com friend travels a LOT to icy high-lattitude places and absolutely has had camera gear stolen from checked bags. But we're talking book-sized bits that go for $5000. The newest stuff that decently fenceable.
But lay it all out, take a photo beforehand. Do it again before you leave the airport. Maybe put a printed inventory right on top. Doesn't even have to be up to date, it just has to look like you know and can prove every little bit in there.
I HATE when I've got things packed and padded the way I want and then TSA reshuffles it all with no regard for sharp corners, fragile stuff, frozen fish, etc. But you do, too.