Expies are fine. It's just that, as you know, they're expies. And from my perspective as the writer of this story, which isn't a parody of anything, but simply an original work revolving around a fictional version of this forum, if I had a choice, I would rather write about an Axilus Prime, or Galen Marek, or Edward Kenway, who was this unique member, instead of an Edward Kenway from ACIV, Optimus Prime from Transformers, and Galen Marek from star wars.
I feel I don't do enough justice to both the members and the characters themselves.
Also, considering your RP history, you should know that for an original work its better to write with an original character than an export.
TL;DR - Personal Opinion: Expy's (Or expies? Still don't know) are fine, but I'm not writing a parody, and even then I would at the very least change some things up. I don't like them for an original work.
EDIT: Also, too many lightsabers man. Can't keep track of it all.