Now that you mention it, I do think it's been so far ignored by the many designers. It is a very interesting aircraft. It's a step down from the King Air and so it's pretty much at the pinnacle of the piston engine twins on the GA market. It's another of the head-scratchers in that it's not built any longer but should be.
It's on par with the Cessna 421 Golden Eagle.
Cheers,
Ken