Technical in what way?
It used to be that there was no limit on how many you could have (just that the display name cannot be more than 80 chars). But then makotech added some code to only take the 2 first pronoun sets that is sent to the server. I asked if this could be reverted, and they (mako/admins) said no.
I think there is like one party in Folketinget that is even slightly left, Enhedslisten.