What issues do you have with it?

I do really like that they're able to improve on the product with firmware updates. One of the benefits of software-controlled oscillators.

I'd love it if they'd open it up with an SDK like Korg's Logue series.

There are the not really serious issues that still exists after firmware update: - When you quickly tap the pitch strip at the right edge few times, the screen turns off for a while (but it comes back up at next user input) - When connected via USB to my PC, and when arpeggiator with UP mode is enabled, then a first touch on the keyboard on any note will cause a Midi Start message to be sent to a DAW (and thus starting a playback) - Pressing octave up/down, shift and arp/sequencer buttons will sometimes result with random note being played.

I like the fact that Arturia managed to squeeze new synthesis types and find a space for more presets in V5 update. I have my synth connected to NTS-1 which acts as a FX processor and i really recommend that setup as it sounds much better.