That's my big concern with the Sequoia. Having already owned an 80 in the past, it's honestly a really high bar for any other vehicle to meet. Not even the Highlander has the same build quality as my old 80, and it's 24 years newer.
This was the biggest thing for me when we got our Sequoia. It definitely is NOT a Land Cruiser. It is a beast of a vehicle for not being a Land Cruiser however after some modifications, and is actually fun to take off road. Added a rear locker, OME lift, bumpers, tires and redid all the front end bushings and arms.
If the 100 series would have worked size wise, I would have just got another 80, and still keep my eyes open for a clean one at the right price. If you can make that third row and cargo area behind it and a decent roof rack work, I would do it