I have been operating the 320 series Bus for a number of years now. Like any airplane, it has pros and cons...
In order to contribute towards the next generation of 320s, here a couple of suggestions:
- sidesticks are fine, but gimme a mechanical link between the left and the right side (it works in the GA airplanes...)
- gimme a kind of DIRECT LAW from 1000' down, so I can fly the bird in turbulence, and not the other way round
- don't gimme a FLARE mode (other aircraft do fine without...)
- gimme a moving levers A/THR system
- gimme a A/THR system where I don't have to LVR CLB and "retard, retard" position the levers
- gimme an FMGS that won't throw me out of DES or CLB mode when leaving NAV for HDG
- gimme an FMGS that will automatically take the 2nd AP online when APP is activated
- gimme an EFIS Control Panel permitting simultaneous selections, like CSTR and WPT together
- gimme complete glass checklists, no more of this after ECAM Actions QRH or EFB work
- gimme left and right independent tilt on the WX radar, permitting better analysis by using L and R ND displays
- gimme a braking system using 2 hydraulic systems when applying pressure, redundancy at hand (normal and alternate provide no advantage)
- do not gimme the ashtrays... there are (hopefully) no pilots smoking on the FDK these days
- gimme a well positioned hook for the handmike, no more bending in the dark
- gimmie a handmike that doesn't weight and look like a truncheon
- gimme FIRE lights that are integrated into the MASTER switches
- gimme some real reading lights permitting a brief in a normal seating position
- gimme...
Well, your turn gals & guys 
live 2 fly 2 live