Re the keybed size...I think it has more to do with parts stock from the M50 73 note boards...Korg are simply cutting a few costs by utilising existing spec'd beds....keeping the weighted for the Kronos. And removing the cost of tooling another cheap Fatar bed into the Krome.

It is after all said and done, a marginal replacement for the M50..it also had what Korg called a semi-weighted keybed, but all the keys were hinged plastic!!! No metal to be seen..

I saw some pics of the action online once...I will see if I can trace it and post here....

This will be the keybed going in to the Krome

I seriously doubt whether it has ANYTHING to do the "look" or "retro" or any of the other reasons you mentioned Diki..

Purely $ + C