I thought about it, but the problem is that often, you only want some
of the corners rounded but not all. LPE has no ways currently, AFAIK,
to only apply to some nodes and not others. Besides it will be an
extra trouble to keep track of this when you edit the path
adding/deleting nodes.
Hello,
Working on the envelope LPE, we have to keep
track of some special nodes of the deforming envelope (the four
original corners). An idea is to create a new type of node.
This could be used in that case to use the Live Path Effect power for this tool.
Steren