Shoot me down if this already exists or failed to become useful, but I believe that a (pinned) general tips-topic can be useful.
The following things I find useful myself:
- selecting a condition or action and press "d" --> make it inactive
(when to use? For example when debugging or tweaking: keeping the old value in sight, without forgetting it)
- A tip I have read on this forum was to add a layout to place all sprites and objects, so that your production layouts stay clean.