Desk phones and Teams Migration

Good luck. I purchased a native Teams phone from Yealink a couple of months ago to kick the tires and came up as a huge disappointment. So many features that we expected to work simply do not work reliably - and features that we have with Polycom VVX (non-Teams native) phones aren't there. The whole UI for calling is clunky, and contact management sucks, I could go on and on. When I probed the reseller, the word back from Yealink was some bs backpedaling along the lines of, "Oh, these were never really meant to replace a true full featured PBX"...WHAT!? Clearly not ready for prime time.