I think I see why you think it would be good idea, but considering the size of Swiss army it would be very costly effort. Its not only about figuring out next

I think I see why you think it would be good idea, but considering the size of Swiss army it would be very costly effort. Its not only about figuring out next gen avionics (which is a feat on its own with unstable constructions these days), but also integration with radar, weapon systems and overall integration within the battlefield. Since Suisse align on most if not all levels to west culture/mindset, I would say they should buy/rent some western-built ones. Anyway the idea of surviving major air conflict with any superpower is laughable. If you consider neighbors, France, Germany and possibly Italy would also decimate air force quickly (no clue about Austrians). Maybe not the highest and most expensive tech since it won't be used in any real conflict anyway. A-10 equivalent would be a good choice for ground support for example.