If you look at the 300-SST power pac and see how compact it is,I'm sure if you take a 3B-SST2,
4B-SST2(full size)and compress them down to say 5HX12-14"W with the same style as the full size,you'd have a superb looking mini monoblock.
If the powerpac can do 300w in that compact size,for sure it can be done in the same style as the full size versions only in a smaller chassis.
I'd definately have 5 of em upstairs.