If anyone comes here expecting to hit a jump and come crashing into 4 feet of pow on the landing you are greatly mistaken. So bear that in mind when you think of Chestnut Mountain. You are talking about your average Midwest Bunny Hill.
In relation to other mountains in the area, I find that this mountain does provide a decent amount of terrain to cover. The groomed runs are nice. However, with all the ropes, it kills the whole freeriding aspect when you want to cut through trees, moreso than other resorts in the area. The runs are farely long relatively. Still you can push your way down in about 25-30 seconds with the right attitude and gear.
In terms of quality of snow, it's decent. It gets slightly icy at night but not many mountains in the Midwest can avoid that unless you go up to Minnesota. It's definately not as bad as a place like Mount Snow.
The lines are a little long, but not too terrible. Anyone who claims about long lines for any resort in the region needs to go to a main lift at Tremblant on the busiest days of the year (Breckenridge can get quite bad also).
Overall, I'd say it's a great place if you're in the area. I wouldn't recommend coming here for the skiing if you're from out East or West but I know plenty of people who moved to the area who think it's some of the best riding around. And being close to Chicago is a plus. Definately a place worthwhile to go to if you can't get to any of the major West destinations.