I posted one of those threads last week regarding the big heavy slide. I wouldn't discount the entire RV just for the Schwintek slide system. I have it on 4 out 5 slides on my Pinnacle FW. They have worked flawlessly until I had my issue with the heavy slide in the kitchen. What I learned from the responses I got on this forum is I did it to myself. The heavy slide as the residential fridge and there have been many times that we would only open this slide far enough to open the fridge door and then retracting it again. Doing this is most likely what got the motors out of sync. A 3 minute procedure which has been described here in many threads and is in the Jayco manual (I now found) and the Lippert Schwintek manuals will re-sync the motors.
Of course any moving part can have catastrophic failure. If man built it, it can break! By the time you get through your 2 year warranty period, you will have already resolved most if not all of your major issues if you have any. Why start over if you are happy the other 98% of the RV?
By then, all you have to do is sit back and relax!