2018 Baystar 3414 here. A few issues, most of which I handled and were because my dear family were not thinking when they worked the slides.
The rig itself, amazing. When we looked and did the "tap" test we felt a big difference in the wall quality between Newmar and anything else in our price range.
The V10 and 6 speed transmission have done well by us. A few trips through the mountains on the east coast and we did fine while towing our Prius behind us.
Winnebago has left Newmar alone, there haven't been any changes that we can tell from a customer service standpoint.