How is adding "TO" much different from the command now?
It's not at all. The original must be changed 'cause the first argument in "/ns group" will be the action.
I'll try to explain better:
Let's assume your registered nick is "Amanda", u have this nick currently + u'r identified, and u wanna add "zomg" to the group.
You won't have to "/nick zomg" and then group it to "Amanda". You'll just do "/ns group add zomg".
And deletion will be from some grouped nick as well. "/ns group del zomg".
Currently, u must switch to the new nick, then supply the password [or to do "/ns drop" in case of deleting], and then go back to the registered nick.
But not with my idea, which all his aim is to save all these unneeded actions.
The "TO" method will be for the original way of performing the command from the new unregistered nick.
No any need to worry from "remotely dropping", 'cause you're the owner of all group anyway.
Btw, it gives me more idea: An ability to drop a nick that you own [it's in your group list], with "/ns drop NICK".