It would be interesting if Lady Sif mentioned her two times on Earth, but considering Marvel Studios and their stupid way of walking away from the Marvel TV series, I doubt that will happen.

Coulson LMD might be worthy enough if OG Coulson is worthy and that's all depend how how exactly Chronicom and it's system. I'm not sure how exactly the Chronicom Memories worth or if someone like Steve or Thor is worthy then their LMD version is worthy or not. Also I'm pretty sure by now Thor's know about Coulson and his team cause Tony probably knows about it, We were probably just never told about it onscreen.