They look like a good thing to me really...
Wider cars, slick tyres, and less aero - brilliant idea. Remember the narrower cars, grooved tyres that came in in '98? That, for me was when F1 got boring. Reverting back to wider cars with slicks will be great. Also, they're proposing bigger wheels - fantastic, we can look forward to huge 70s style slicks on the back of the cars!
Also - mechanical clutch and gearchange linkeages. Great! An actual clutch pedal - amazing! We probably won't see actual gearsticks, but a paddle shift mechanical linkeage would be cool.
Standardised gearboxes and brakes won't make that much difference anyway. Most teams (I think) pretty much use the same(ish) brakes anyways (there's only so much braking force that can be applied, and I doubt any teams are using sub-standard brakes), and in the grand scheme of things, we won't even notice the standardised gearbox thing.
Driver operated start button - again, ace. Just 'cause of a spin and a stall, you'll no longer be out of the race. Also, less hassle with mechanics on the grid, starting cars like they do atm.
Standardised ECUs etc., again we probably won't even notice the difference this makes to F1 - all the teams ECUs pretty much do exactly the same job, as well as it's possible to do it anyway, so it's not going to make much of a difference there.
From those regs, it does look a bit like dumbing down...but back in the 60s, everyone used the ZF gearbox and the Coventry Climax engine...then everyone used the Ford DFV... It was optional, but pretty much standard, and the racing was great. Standardised parts usually means closer racing, and with 90% of the downforce going, we'll doubtless see closer racing again.
IMO, all the teams are so close to the pinnacle of what a car can actually do on the track at the moment, that standardising things like gearboxes, brakes, tyres, ECUs and things like that will be pretty transparent to us.