Panic designer and iOS game maker ( Blackbar; Space Age; The Incident) Neven Mrgan tells us what he does and doesn’t want to see next from OS X and iOS

cc OS X should rethink window management, possibly eliminating it. iOS trained me to focus on one app at a time, without worrying which window is ‘behind’ another. Getting OS X to that point wouldn’t just be a matter of consistency – it would genuinely improve it.

Right now, Mac screens range from 11 to 30 inches. A solution to this spectrum of sizes is giving users flexibility in how to arrange workspaces (Spaces, full-screen, windows and so on), but it would be better to provide APIs and guidance by example to ensure apps adjust themselves to shine on a MacBook Air as well as on an iMac. Reminders in full-screen on a large device is a good illustration of this unaddressed issue – it looks ludicrous when it should become more useful.

iOS should also get better at window management, along with introducing features and concepts to improve cross-app and multi-app workflow. Also, iOS should be rethought for iPad. Since iOS 7, it has proved that early joke about iPad being a scaled-up iPod touch. iPad should have its own OS features and ways of doing things.

Instability and lack of polish are real problems, too. I’d be happy to see Apple spend a year cleaning things up to stabilise its platforms. If there’s time left over, a similar spring clean on visual design would be great – too much of iOS and OS X still suffers from ungainly, rushed, or inconsistent design.