It would be nice to have the ability to preview collisions in dev mode.
Currently testing collisions is quite annoying. Add to that wonky Blender
support for collisions and you have devs that prefer not to use collisions at
all rather than deal with it.
I totally second that request.
Hello, It’s not often that I get to say it but: yes, we did it! It’s coming
along with the next Sim Update (no ETA yet). But yes, we added the display of
collisions in the Devmode’s menu. Have a good day,
Great to hear! Keep up the hard work guys 
That’s fantastic! Thank you.