[eschaider]

I think it would be interesting if you built it with four short rods and four long rods. That way, you could work both ends of the power band. And while you are at it, stroke four of the cylinders to get a 427-ish cylinder displacement and then build the remaining four as a 347 but, and here is the secret sauce, on the four 347 holes. Do two as big bore 347 cylinders and two as smaller std bore 347 cylinders.

This visionary, modestly unique configuration checks all the boxes for all the most desirable engine types/displacements and manages to do it all inside of one block and one car. The crank might be a little challenging, but it is nothing that a good billet crank shop would not be up to

My modest expectations would be that you have never driven anything like it previously and will never drive anything like it going forward — and it checks all the boxes you have identified as either important or interesting to you!