I still use several RPis at work, there are two dozens in production now. The latest additions are:
- quad-view monitor replacement for videosurveillance (on lobby desks) - they display 4 mpeg streams from IP-cameras on a repurposed 19'' dvi computer monitor. The backend is ZoneMinder.
- RDP thin client.
The original RPi CPU was too weak for this purposes. The new RPi2 works just fine.
Other uses are:
- environamental monitor for network/computer rooms (sensors are cheap).
- digital signage client, for office lobby
- email+ftp server for multifunction printer. I use it to enable scan-to-email and scan-to-folder functions
- datalogger for industrial measurements (voltage, current, thermocouple)
After almost 2 years of continued use, the weak spots of the RPi hardare have been the power supply and the SD card.
- The USB cable needs to be "thick". Regular run-of-the-mill cheap USB cables may work for a while, but the RPi will be unstable.
- Most SD cards will fail after a while. We spent lot of time troubleshooting several options. The Samsung Pro micro-sd cards are my current choice. Avoid Kingston. I got mixed results with SanDisk.
Microsoft released Windows 10 for RPI2 yesterday. It is not a full-fledged OS now; the RPi just becomes a kind of peripheral of the main PC. They suggest Samsung evo and Sandisk SD cards, both of them failed to me after intense write operations.
http://ms-iot.github.io/content/win10/SetupRPI.htm