What do you mean not much for a beginner? There's tons of trails, lots of open meadows if you look for them, and about the easiest place to ride above treeline I've been to.
I think it's a perfect place for intermediate riders, fun stuff, but not too comitting.
GL is trail heaven if you're into that kinda thing, and if you talk to Grand adventures they'll let you trailer a sled to where you want to ride, they have 600's in GL that are worth picking up, but only 550fan's in WP.
The trails outside fraser are ok, but you mentioned you want to climb, Church park is flatter than your 10 yr old sister. Even a beginner can get bored there, I had a bro head there with his wife a few weeks ago, she said she was bored in an hour.
Depending on rider level, there are many other locations to play around there, but some are a bit less friendly than corona, GL or church park