Command "SubDExpandeEdges"

In my humble opinion, certain commands, like this one, should be implemented more intuitively and profitably.
Using this command (but there are many others like it) through the command line, with the various options difficult, it seems to me like throwing the shot in the foot to the “friendly” usability of Rhino.

Preview options and interactive handles would be welcome (many professional cads and do not implement these possibilities); it is not about “games”, throws here, throws there, but about possibilities that, in the course of modeling, show you what the designer is creating.

The “slid” SubD command is an example of what I mean. Let’s take an example to implement other interesting tools in a coherent way.