Some live (OT?) tricks from my experience with Soundcraft Ui24r:
*) On live event i runned string quartet sends thru USB B connected PC (Reaper, of course) for some good VST reverb (Ambient Reverb)
*) You can easily do parallel compression on channels or groups (this feature can eat up some channels)
*) You can record multitrack on PC over USB B and backup on USB A stick.
*) You can control this box via onboard WiFi or LAN. I controlled my PC (via remote desktop) and Ui24r form "FOH" with little NUC box with touchscreen monitor. While having seperate WiFi AP up the stage for "tablet walking".
*) This device even has ffmpeg based onboard USB player
Eats WAV, FLAC, MP3, OGG, M4A easy
Only "drawbacks" (c'mon, this is only 1000$ box) are:
*) built in FX can be more advanced
*) Only 48 kHz, no external sync