Thanks for your feedback.
You mentioned music would help the game - did you not like the existing track or did it not play while you ran through the lab? Regarding the reset, we already noticed it could have been better but was pushed back for other priority topics since we slowly ran out of time. This will definitely be fixed in the next release.
Affecting multiple objects with the gravity tool was executed as planned (f.e. in the last room, where you need both blocks) but we also noticed problems with the platforms. We are still looking for a good solution to have the option to manipulate multiple objects without running into said issues.