yep, what im looking for is 2 or more irregular groups of icons, visually seperated from the other groups.

like say having one group of system apps and one of games.

the simplest, and most fiddly is basically to allow empty entries (funny enough they mostly work already as manually adding something with just a name will produce a blank spot, no icon or similar, just like adding titles in personal menu).

the more complex one is to give the user the ability to put each icon into a numbered group, and have the software figure out how to do the spacing so that each icon of the same group are next to another of the same number, but no next to any of another number, based on the shape and size of the launcher area.

but that latter solution could be highly cpu intense i suspect.