I jump-seated on some of those TWA 76's too. There was plenty of room to lay out and nap back there, or, install a self leveling pool table.
The DC10 had good views and was wide (the 747 never comes close to cockpit comfort/views) but riding transcon on a nice day in the L1011 was just splendid.
Thinking of it, I can't remember a systems/airframe issue on the L1011 that led to or was attributable to an accident. There's the DFW micro-burst & the Saudi cabin fire due to a on-board cook stove and landing pressurized, but really, I can't come up with anything else. Wait, there's the JFK RTO with false shaker activation, maybe that counts? Certainly no catastrophic systems/airframe/control failures?