Suggestion: rule duplication

Hi, using eM for a few months now, and pretty happy so far. However, I lack the capability to duplicate a rule. I have similar rules differing by just 1 or 2 parameters, that would be nice to duplicate the first instead of having to fill all settings for each. What do you think?
BTW, would it be also possible to save the columns width for the “Rules” window? Currently the changed window size is preserved, but not the column width.
Thanks in advance