The metal case is definitely sturdy but can get cumbersome, especially if you’re moving the Altura around like you described — a lighter enclosure makes a huge difference for flexibility and ease of use. On a related note, I managed to find some replacement parts on one of the stores listed on Topforless at a really good discount, which made upgrading and customizing my setup much easier without breaking the bank. Your idea about a sustain pedal for the arpeggiator sounds excellent too — would add so much control.