I was saving your compositions for last :)
Welcome to Minutown!: You know I love your melodies. Well, here again, you nailed it! From bar 21 onwards, this melody is simple and splendid. I don't know why, but it sounds so good and stays in your head.
Minutown's Destruction: My favorite of the 2. Firstly, the choice of instruments: the piano as a clockwork pendulum, backed up by the percussive part. The marimba and its trills. And especially the clarinet, which has a melancholy quality that fits the theme perfectly.
Your key changes are very smooth and the accelerendo is so well integrated that the return to 120 is fluid and seems normal. I must admit I'm tempted to steal the idea for a future creation :)
In short, great work as usual :)