They have a very long intermediate park with more features than you can think of and endless lines. Lots of the features are easy or hard depending on how you approach them. pretty much perfect based on your description of your ability. Jibs and lines all over carinthia. A decent amount of advanced stuff too, but it's easily avoidable.
You're not going to really get this same skiing at snow as somewhere like killington. Granted this is my opinion, but most of snow is relatively flat and doesn't have the same expansive terrain as Killington. There is good tree skiing but nothing like Killington. Plenty of long cruisers tho. When I go to snow I go for the parks. I don't know the mountain well, but none of the trails thrilled me.
Late season really depends on the year. Typically it gets softer sooner than most vermont resorts and starts losing snow fast, but that's the nature of spring skiing. They keep everything open as long as possible and keep the parks prime until closing.
This is just my quick run-down. I think everybody will have different takes and taste.