It would be sad if they discontinued it. It’s such a great synth for sound design, but also for straight up jamming with the sequencer.
There are a lot of flagship monos out there, but I’d argue that the Matrix is still fairly unique, at least in its approach and UI. With its two filters, matrix, and modulation options, you can really get diverse sounds out of it. It challenges how far you can take a mono synth these days.
Arturia has also had some very nice firmware updates and added features for the Matrix in its lifecycle, and I don’t think they’re done.
Agreed that its biggest drawback is its size. I’ve thrown out my back moving mine around the room. I’ll never sell it. Partially because I’d need a truck to take it Fedex, and partially because it’s fucking awesome.