Loving it so far! Very easy to pick up and understand as someone already familiar with logic puzzles or games that model circuits. Critters eating eachother seems to lead to ctd a lot and in some cases if you remove a body part associated neurons stay and are not removable (seems to happen most often if you edit the body while in the brain editor) but it's otherwise pretty stable for such an early version.
Would really like the option to fullscreen, but understand if that's low priority.
It was kind of surprising to read that it used to have a less moded editor setup, the mode switching was pretty much the only major complaint that came to mind immediately while playing. Maybe have it as an optional setting to use the double click to pick up connections as before, for us people with wrist pains, if not some other modeless solution? Would rather have a little more tutorial/learning curve than have no option to avoid extra wrist motions for constantly switching modes while making changes. It's also been easy to forget/lose track of what mode it is in if you exit the brain editor and then accidently dissconnect things when coming back, and it's much more work to reconnect a bunch of stuff than it is to remove an accidental connection (even more wrist movement). Having options is always good for accesibility.
Otherwise it's been a great experience so far and really interesting and exciting to see the kind of complex behaviour that can emerge from just a few types of pulses and connections and love that the way you build creatures allows so much freedom in how you use the parts.