Thank you for your very infomative thoughts, they are very appreciated!
The majority of wisdon certainly holds that inward rotating is better than outward. Obviously, common light twin design supports this. I will take every opportunity to familiarize myself with the various effects.
Though completely unrelated to my original enquiry, in this week's test flying of the Basler turbine DC-3 pictured, I could not detect a critical engine. The left is said to be, but the plane was well stalled before Vmca, so I was reacting to a stall instead of a limit of rudder authority. I attribute this to all of the external equipment hanging from the plane, as the stall speed seems to have increased somewhat. I will take future opportunities to evaluate critical engine in this aircraft, as well as my other project aircraft, in a few weeks.
Cheers, Pilot DAR