Think how much the star wars scene has changed since the first Celebration Europe in 2007. Back then there were just 6 films and it wasn't owned by Disney.
The bulk of cosplay still seemed to be OT and love for the PT was still pretty limited.
But since then, there's been at least 7 (Possibly 9? - I've lost track a bit) series, plus 6 more movies (including the animated clone wars) - all of which have introduced new characters and new actors and there's a lot more to come. Disney is very much forward thinking and looking for this to be a long term investment with the need to introduce new people to the franchise and to keep it fresh.
I found most of CE quite boring, but my SW focus is quite narrow. So I just took from the 4 days what I wanted and wasn't concerned about the rest. To be fair, that was the same in 2007, 13 and 16. Though the amount I'm interested in became less each show.
I just remind myself that Star Wars isn't mine, wasn't meant for just me - it's for everyone and anyone. Star Wars is much bigger than it was in 2007. That's no bad thing. There's a lot there - so you can take what you want and don't worry about the rest.
But in the meantime I'll just sit in the corner of the room shaking my fist, saying 'it's not as good as the old days'