Actually, I think you partly misunderstood me, most plated liners are just fine, I'm only talking a small percentage that may not be "true" round, I know that most are just fine, but it depends on the process used to plate them, and then finish them off.

Likewise, I know plated liners are not usually perfectly shiny, it's just that my point was that unlike other liners, they have no crosshatch for oil retention and anti friction/wear benefits, meaning they do not lubricate as well as a iron liner, but then they are of a much harder material meaning they get longer life that way.

Yes, Plated liners can be ground and then polished, but not honed, I do understand that also, motorcycle engine basics are not that far removed from RC engine basics, your working from the same basic principles, particular with some of the latest advances in motorcycle cylinder plating technology.
And motorbikes have been revving well past 9K for some time now...

All your really saying is you can get more engine life by applying basic blue printing principles to RC engines, which is not really that new, in any form of motor sport.
The part I found interesting was the use of a lapped, or really crosshatched honed method to the outside of the piston, which in reality has the same effect as if you did it to a cylinder wall, and that is to help retain oil on the piston walls to aid lubrication and help slow engine wear.

Unless I'm missing something, it's all fairly straight forward stuff right?