We've had out 200 for 4 years and didn't regret our choice for one minute.
Regarding the lack of rear door. Did you ever notice that nearly all class A, B+ and C motorhomes don't have rear doors. Class Bs built from a van do, but they already came from the chassis' factory with doors ... the converter didn't add them. We've found more positives than negatives.
For one thing, it looks more like a "real" motorhome than a van conversion. The rear storage space is accessible from the outside without exposing the inside of the van to the elements.(Imagine you have doors and your wife is dressing in the rear of the van after a shower and you're putting stuff away outside ... oh how she will love you when you open those rear doors nice and wide
If you have or install a cargo carrier or bike rack, you don't have to swing it away to access rear storage.
The only negative point we've found is that we would sometimes like the rear window to open, but there are still 2 windows allowing cross-ventilation.
As far as leaks go, they are the big killers for an RV of any type, so whatever you buy, watch out for them. Some people have complained of water coming the rear window, but we haven't had that with ours. When parked with the front of the van lower than the rear, we did once have water coming in from the air conditioner, but that is no different than any RT.
Rust can also be a problem with a van conversion, but much less with the 200 with its fibreglass shell. People with other models have reported finding rust below the area where the air conditioning unit is located, when replacing it. When we changed ours 2 years ago, the bottom of the air conditioner itself was rusted through, but the RT was like new. We just has to pop another AC in there.