@dweller Volti Audio’s Vitorra is probably the closest thing to a modern La Scala, of course, they don’t come cheap.
It doesn’t solve your ’too big’ problem, but before he died PWK was working on the successor to the Klipschorn which was going to be the Jubilee, a fully horn-loaded speaker but with the rear of the bass-horn built into the cabinet to free up the need to place them in corners.
Klipsch never released it as a consumer product, but adapted the design into one of their cinema speakers, turning it into a three-way (the PWK design was going to be a 2-way), and adding the requirement of an active crossover and biamping.
You can buy the cinema market Jubliee (it’s the KPT-535B) or if you contact certain Klipsch Cinema dealers they’ll build you a 2-way Jubilee with a passive crossover network so you don’t need the active crossover and biamping, and even throw some nice wood veneer on the front to make it a little bit more appropriate for a home setting.
Of course, ’appropriate for a home setting’ still looks like this:
http://wardsweb.org/misc/customjubs.jpg