I completely disagree with the advice you're getting. To ski Killington on a weekend, you have to construct your day so you're skiing where there are no people. You can't stick to one trail pod and do that. The best skiing at Killington is on the ungroomed natural snow trails off the fixed-grip lifts. Uncrowded and good skiing surface. Squeeze Play on Rams Head. Vagabond, Northstar, Low Rider, Great Bear, Conclusion (sometimes), Interceptor, Royal Flush on Snowdon. West Glade on the Glades triple. Catwalk, Escapade, Flume off the K1. Jug, Jug Handle, Breakaway, Pipe Dream, Roundabout off South Ridge. Thimble, Old Needles Eye, skier's right Needles Eye under the Skyeship, Needles Eye liftline off the top half of the Skyeship and Needles Eye quad. The off the map tree skiing is endless and there are lines between virtually every trail. You can ski Killington for a week and pretty much stick to natural snow trails and trees other than flat connecting trails to access the goods and never ski the same line twice.
For somebody coming up from PA who enjoys glades and a little bit of challenge, you definitely need to hit:
Squeeze Play on Rams Head, a fun easy glade and easy access via the tunnel under the access road from where they dump tour buses
Vagabond off the Snowdon quad, fun little bumps
Great Bear off the Snowdon quad, somewhat steeper bumps
West Glade off the Glades triple. Nice easy bumps.
Breakaway, Jug/Jug Handle, Pipe Dream, and Roundabout on South Ridge.
That would pretty much fill your dance card for the morning and you wouldn't spend much time on the mayhem of groomed snowmaking trails.