Edit: sorry Oliver I see now that this was for previously discussed topics only. I'll post in the ideas section. Let me know if you want me to delete the whole post.
I have a small and what should be a simple suggestion to implement that I could see Zeptolab doing... Mainly because it's small and doesn't add a lot of content, yet would add a new layer of gameplay.
What about making the thief pick up a key to be able to reach the totem. All of the existing levels would work already (and maybe just maybe they will finally allow us to use ALL single player levels as a base one day, along with allowing us to flip them of course).
The key would have a hitbox of 1x1, and would potentially force the thief to venture in a direction they normally would not to collect the key. Without the key, touching the totem would do nothing.
I'd prefer new content like levels and traps, but I think this small addition would be interesting and add a few more seconds of gameplay to each level.
Edited by Dub, 13 January 2016 - 12:46 AM.