I could have voted for more but I chose the ones that the wife and I went through in the purchase of Keg our 101.
The short story is we had a very reliable very capable discovery 2. But when we pulled up somewhere the wife just wanted to get in the back and get her head down rather than faf about with tents.. A roof tent was an idea but I wouldn't want it on the car all the time and it is pretty massive to keep in the garage, so a car we could sleep in was on the list.
Now a nice vw camper van would be great but I am an off roader, I also do a bit of game keeping and green lanes so a car that could have crap and feeders chucked in the back and taken up some tracks was necessary, so the 101 was suggested and she actually said yes so I wasn't going to ask twice.
Mine was bought and converted to basically be a tent on wheels with no nonsense storage capability, that could easily be cleaned out for those dodgy game keeping scenarios.
I also am a keen home mechanic. The d2 was ok to work on but the electrickery was always on my mind. Now with Keg I always have something to tinker with even if I don't have to. I just enjoy it.
So
reliability. Well a 33 year old truck probably isn't as reliable as a 10 year old d2 but I know, I and a bush mechanic could fix/bodge it.
Load space, enough for a double bed and our kit.
Off road ability a must with me
Comfort is out the window. I want to feel the road I'm going down. People say bikers get a better overlanding experience because they are closer to the people rather than driving along in an aircon cacoon. Well I feel I am pretty close to it as well.
What I think is the 101's weakness is spares. It shares spares with rrc and series 3 109s and the unique spares I will take along with me or make do with out. But to be honest I hoping that everything should be repairable.
That's my 2 pence worth I why I chose quite a different vehicle
Oh and fuel aint great but every time I'm at the pump I say to my self suck it up cup cake then I jump in and drive off with a smile on my face.