Just a simple request. :p The locations in Seasons 1 and 2 are shockingly barren - in particular the street, Sybil's, Bosco's and Stinky's. While there is some comedy to be had from the idea that Sam and Max are their only customers, it would be nice to see the NPCs just hanging out doing stuff in the background. 205 had a little bit of this, and it was brilliant.
If the story has to be wiped clean so new fans will understand without having to play the other games, using characters from the old games for this purpose would be a good way to please old fans without alienating new ones.