Dear manufacturers of keyboards,
It's called muscle memory. Don't screw with it.
In particular: Do not group function keys in non-standard sets; F3, F4, and F5 have very different effects. Especially do not mess with the placement of the Delete key.
Very truly yours,
P.S.: I admit, the slight curve is a surprisingly effect compromise between a flat keyboard and a split one. Not as good for my hands, but fits better on my lap.