We don't need no stinking Transalp. What we need is for Suzuki to get off their butts and build a real off-road chassis for the SV650 engine. The bike could be no heavier than the KLR650 and have power like a rocket ship.
The DL650 is just an SV650 engine in a DL1000 chassis. The only thing they changed is to make the seat less comfortable so short people could reach the ground easier. All the weight savings comes from the lighter engine and only having a muffler on one side.
The TransAlp never sold well in the US but there are a few around if you want a used one. I'd agree that the WeeStrom or the new KLR would be better supported alternatives, depending on what mix of street/trail you were buying for.
Talking with one of the Kawasaki people at Sears Point this weekend I asked him when Kawi was bringing the Versys to the US... he said when the bike and the price point were presented at the dealer show the dealers killed it. The dealers know what sells here.