I'm sorry to say but these "major" releases of SM are to me, minor incremental updates. There are no major improvements in my opinion, the UI is still lacking, the features within are minimally improved, I'm not sure if it's revenue for the "annual major update" but the software does not reflect the same.
Simple UI improvement such as when I click the collapse button in the mail area to hide the folder list, why doesn't it remember this when I come back the next time?
Content filtering is inbound only, I assume and read here. Why hasn't anything been done to improve this?
EWS was supposed to get the new update in SM 14 but it's still delayed meaning I'm continuing to pay for a service I can't use on 50% of my devices.
The UI is not very responsive in that it's typical asp.net synchronous processing. Click, wait, see something happen over a second later. The interactive responsiveness could be much improved and is probably a result of typical asp.net processing and not more advanced async jquery type handling.
Popups are slow to appear especially on Mac/Safari - more inline handling would improve this like other web clients and not rely on popup windows, new windows, etc.
Overall, the development and innovation has stagnated over the past few years relying more on 3rd party integrations (message sniffer) to bring revenue than really improving the product from the usability standpoint, keeping subscription services updated, and keeping up with the latest web technologies to provide a much better web experience among features for admins with folder pickers such as for content filtering, better Task screen UI's (additional notes is still lacking).
It's a great product but I am not feeling I'm getting my money's worth is the ultimate problem and the product is feeding off of it's existing success vs. innovating and improving providing value for the annual costs.