I can't - or at least I'm not willing to - see Yuneec going down. What I see, and what I heard from product managers and developers at the trade shows, is that Yuneec will focus on the commercial users. Opening payload options for the H520, "re-inventing" the H920 as Enterprise version with an SDK and many payload options as well shows to one direction. Here in Germany many fire departments and police stations operate Yuneec.
I guess, the "upper price" consumer market is "lost" to DJI, in the lower price levels you can't exist for long, so you got to focus on the professional sector.
It seems, as an European customer you are kinda lucky, 'cause I can' t complain about service quality. 3 calls were answered within 10min and with reasonable answers, repair job was executed within 8 days including shipment, and talking to Yuneec employees is always interesting and entertaining.
Perhaps, US department will be asked to perform better, when the Chinese HQ compares future KPI?
For me, the Yuneec hexas are a rock solid platform that offer - in case of end-of-life time - enough possibilities to modify it for a "second life" - of course, that's not what a fly-only fun/hobby operator is after, I know!