I see you are from perfect north. I started skiing there myself and then switched to mrm when i went to school at osu so i think i have a pretty good idea of both.  Ive been skiing mrm for 4 years now, since the first year of Capital PARK and I love it.
-I think for the jumpline you'll find that they can get up to 50' towards the end of the season but for most of the season they are really nice 30'-40' footers.  earlier season (like january) they have two big air comps with about a 50' jump built by mount snow's jump builder (so its perfect). last year the big air was open to the public for 3 weeks in january i think.  the jumpline gets really fun in february when they setup the slopestyle course (yes we have a legit slope course every year) and put in some L-XL rail features at the top and bottom of the jumpline.
-Capital PARK itself is mostly a top-bottom rail park with a few smaller jumps and a hip scattered throughout.  usually top-bottom you can get 8-9 rail hits in a run or 3-4 if you take the hotlap chair which only accesses the lower park
-at the end of last season  between all three parks (Capital, jumpline, and learning park) i counted about 40 total features. if ur gonna buy a pass do it soon because the prices go up at the end of the month i think. i have multiple videos from the past few years in my profile if you wanna get a better idea of what it  usually looks like