> The possible difference being with fly-by-wire it's much more likely they can keep the same(ish) flying behaviour (meaning no new training) whilst making fairly dramatic future changes to the airframe if required.
Hopefully with a full fly-by-wire system they're a little more careful to make sure it's reliable and won't suddenly nosedive the plane...
I'm sure they have; everything I've read about Airbus FBW is that it's triple-redundant.
Remember, with FBW, that's the plane's primary control system, so of course they're going to be ultra-conservative and make sure it's right. With Boeing's MCAS, it was tacked on at the end as a cheap hack to try to make the plane have the same flying characteristics as the older 737s. Basically it was an afterthought.
Also, Airbus has a longer history of pushing fly-by-wire.
Hopefully with a full fly-by-wire system they're a little more careful to make sure it's reliable and won't suddenly nosedive the plane...