You've also likely noticed how important point 1 was to address points 2 and 3.
Point 4 is a bit harder to answer, but I can tell you that there was at least some thought given to doing a "while being chased, move laser to move cat" kind of logic. Sadly, it didn't make it into the game, and I'm almost certain that it would help methods of movement other than the mouse.
I do agree that in the late stage of the game, it might be a good idea to mark out the final objects left. Either when crossing a certain threshold, or maybe a timer would be a more fair approach to this problem.
I know what you mean, and I'm in my own quandary about it. After all, I think the game would be harder to appreciate as we zoom it out more, but a shorter sight range may make it too easy to get around the humans sight. Point 6 is the hardest to answer.
Thank you for your candid response. We will be back stronger in December!