Lot of over engineering going on here
KISS but logically the more robust the plate the more rigid it would be IMO but then again I'm no engineer
My RC has a full length Vixen plate which I fit into an ADM Vixen to Losmandy adapter the Vixen dovetail is supported along twice the distance as it would be on an EQ6 saddle and it works fine AFAIC.
With the type of imaging I do (no permanent setup), I don't even consider flex an issue, as Brendan said seeing etc will probably impact more on the quality of the image I take.
