Actually, nothing pertaining to Star Wars Galaxies has really changed with regard to canon, even with the Disney acquisition of Lucasfilm and the Story Group's invalidation of the Expanded Universe canon. The reason I say this is because the only canon elements of Star Wars Galaxies were "the stories and general background information," which we could largely interpret as being anything that came from the films. Everything else, such as our player characters and any gameplay was always considered non-canon, even under the Expanded Universe. I'll post the Holocron and how it separated the various levels of canon before Lucasfilm scrapped it:
G-canon was George Lucas canon: Considered absolute canon, it included Episodes I–VI (the released films at that time), and any statements by George Lucas (including unpublished production notes from him or his production department that are never seen by the public). Elements originating with Lucas in the scripts, filmed deleted scenes, film novelizations, reference books, radio plays, and other primary sources were also G-canon when not in contradiction with the released films. G-canon overrode the lower levels of canon when there was a contradiction.
T-canon was Television canon: Referred to the canon level comprising the animated film Star Wars: The Clone Wars and the two television series Star Wars: The Clone Wars and the planned live-action series. C-canon was Continuity canon: Consisting of materials from the Star Wars expanded universe including the Star Wars Holiday Special, books, comics, and games bearing the label of Star Wars. Games and RPG sourcebooks were a special case; the stories and general background information were themselves fully C-canon, but the other elements such as character/item statistics and gameplay were, with few exceptions, N-canon.
S-canon was Secondary canon: Covering the same medium as C-canon, it was immediately superseded by anything in higher levels of canon in any place where two elements contradicted each other. The non-contradicting elements were still a canon part of the Star Wars universe. This included certain elements of a few N-canon stories.
N-canon was Non-canon: "What-if" stories (such as stories published under the Star Wars: Infinities label), crossover appearances (such as the Star Wars character appearances in Soulcalibur IV), game statistics, and anything else directly contradicted by higher canon ends up here. N-canon was the only level that was not considered official canon by Lucasfilm. Any published material that contradicted things established in G-canon and T-canon was considered N-canon.https://en.wikipedia.org/wiki/Star_Wars_canon
Personally, I will just roleplay as I did when SWG was live. Considering SWG takes place between Episode IV and Episode V, the majority of canon is still largely the same and unchanged. Since player characters were always non-canon anyway, I will merely build stories from the game and perhaps extend to Legends for more. The new canon, as some have stated, is problematic due to various aspects being removed, even if it's largely minor changes that don't really change the overall experience.