I accept this MOCanon.Although Tim basically steals a good deal of stuff from the worlds he visits, up to and including a briefcase of cash and an entire freaking freight train, just all incidentally and because Ingo is kind of a huge jerk. Maybe Tim/Max becomes a criminal as time goes on just because everyone assumes he's evil, and by the time he is an adult he is still cruising through time, trying to find his way back home, and has become infamous in the LEGO Town time period. That's kind of a fun way to look at it.
Not sure what to think of Tim = Max. I'm just gonna pull some MOCanon and personally declare "more alternate universe shenanigans".
Also, slightly unrelated, but I remember Sadie once mentioning to me that Frank Madsen (artist of the Jim Spaceborn comics) drew this little catalog comic:
I don't have a chat log, though, so I'm going from memory - take it with a grain of salt until Sadie can confirm.