The detachable lift haters are forgetting how detachable lifts can completely revitalize and revolutionize a portion of a ski area, or even an entire ski area. There are two prime examples of this at Killington, those being Ramshead and Snowdon.
Ramshead: This area was first developed in 1962, served by a 6500 foot long double chair. It features a few top to bottom trails that were generally mellow in pitch. Since it was built, it remained essentially unchanged into the 90's. Meanwhile, other areas of the mountain opened up with much more modern lifts, snowmaking, and amenities than what Ramshead had. In fact, only one trail, Header, the lift line, even had snowmaking. Fast forward to 1996, and Les Otten changed all that. The double was replaced with a high speed quad, the trails widened, lodge renovated, and a new beginner area opened. This significantly reduced crowding at the Snowshed and K1 base areas, and provided a "next step" for skiers who learned on Snowshed and ready to up their game. Ramshead, once a quiet, underutilized part of the mountain was instantly transformed into one of the most popular, which it remains today. And remember how Header was the only trail with snowmaking? Well now the entire mountain has it, and it's one of the first sections to get completely built out each year.
Snowdon: With high speed lifts opening all across the resort, Snowdon was one of the last areas that only had fixed grip lifts. The triple and quad were slow, windy, and cold, especially when they stopped frequently, lengthening the already long ride. As other parts of the mountain grew around it, Snowdon became a pass-through area between Killington Peak and the upgraded Ramshead. This resulted in some dangerous trail intersections and safety concerns aside, a disjointed ski experience. In 2018, a new bubble 6 replaced the Snowdon Quad, the worst of the trail intersections were removed with tunnels, and now Snowdon is now an area people will seek out and lap. It has some nice top to bottom intermediate trails which the resort was short of before. It's also the main area for early season skiing once they've expanded beyond North Ridge.
These two areas would not have been upgraded and revitalized without detachble lifts. You can't do such a groundbreaking improvement of a trail pod or base area without a detachable lift anchoring it.