A Mimic Support Gem...

I was thinking that a unique support gem that could 'mimic' a currently used support gem in your skills, that you can have that same support gem twice. Basically, you would place the 'mimic' gem it into a socket and place on top of that the support gem that you would like to use twice, from an existing support gem that is currently used in your skills.

What do ya think? Good or silly idea?

The idea to limit support gems unlike in poe1 while also limiting their tags so we get in total a forced build to play or a build that's completely META and couldn't be figured out without looking at builds.