* "Make me laugh" always brings me to the same YouTube video.
* Had pretty much no issues with the default prompts. It was able to find some challenging Spotify playlists, open random websites (including non-standard English domains ones when I spelled them out).
* "Read this page" uses an awful TTS engine, which is a shame considering that I might actually use this feature on a somewhat regular basis. I'm assuming it uses whatever it detects on the OS level, and so far I haven't bothered with finding a better one (on Ubuntu, if you know of one, please suggest).
* "Set a timer for X min" works just fine, which is probably the only thing I use Google's assistant on my phone (or whatever it's name might be now).
* I like the idea of routines in the app settings, which is supposed to tie multiple queries together. I could see myself using it for something like a morning routine (tell me what time it is, give me weather info, read me news, etc.)