Thank you for your feedback, much appreciated.
You got some valid points there. The start of the game was something we discussed but couldn't fit in the flashlight scene at a later point of the story. And you are right about the character switches. The first switch is to illustrate that you can switch at all, so we felt it was necessary. Later in the game we had to change some puzzle chains to avoid dead ends and that rendered the second switch a bit pointless - but it still feels right to learn about the next goal as Scotty. Regarding the pills - we hadn't much time to fine tune the puzzles and to add more signposting, but if you show the pills to Karen she will tell you that Tim is the one who uses them.