Shall we embrace crossposting? -- Absolutely. Most content on Reddit is crossposted from god knows where. It's how sites like this work.
Shall we have links in our bios? -- Depends. I certainly won't-
Advocacy? -- I was never active enough over there to speak to that, but... up to you. I'm waiting to hear that speaking of alternatives has become a bannable offence.
Ignore?
-- I think that's wrong. See 1 as for why.
I've said this elsewhere, but this is Peak Star Trek. This is what Trek always was and always should be. Cerebral, examining the human condition and generally less reliant on shooty shooty bang bang than other franchises.