changing layer within a group by script/ speed of "start editing"

[Dr. Hawkins]

I have a group with four overlapping graphics.

Depending upon what happens, different ones want to be brought to the top
and change the overlap.

I'm currently using start editing/set the layer of zzz to top/stop
editing.  I think it also changes the size.

I can actually see the order in which this is handled on an iphone 6+.
Fast, but visible.

Is start editing "expensive"?  Is there a better way to do this?


I suppose I could skip the group and catch their handlers in the card or
stack instead of the group, but . . .
-- 
Dr. Richard E. Hawkins, Esq.
(702) 508-8462