What exactly do you think is so critical that it gets left MEL'd for days on end?
Well I know of at least one autopilot...In-op for days. That's from a buddy flying for an un-named carrier who's name shall remain anonymous. He needs the job. He signs off and hand-flies.
Crew certainly can hand-fly certain aircraft just fine and the AP gone is supposed to just be an annoyance, but it could lead to bad things in the right conditions. This particular aircraft, the AP is not on the MEL.
Riding in the back, unless you're a pilot, you'll probably never know the guys/gals up front hand-flew through cruddy weather all day after a bad night's sleep in a crash pad. Pilots might notice the continuous small corrections that tell-tale someone's hand-flying in cruise.
The AP wasn't an option from the manufacturer. Their design intent was not to hand-fly it around all day. They and the powers that be left it off the MEL list thinking that a properly rested crew does just fine without it. They don't run any sleep-deprivation studies on the MEL lists, though.
You are stating that your preferences are for a 100% perfect aircraft with no deficiencies. I would challenge you to look at your own plane and see how close it comes to that. My guess is that you'll find the 121/135 birds to be in better shape. If not, my guess is that your plane is in the shop a lot relative to the number of hours it's flown.
You paint a picture that is very grim and I think equally inaccurate.
The fiscal future of U.S. airlines *is* pretty grim. The good ones will make enough to pay the execs their bonuses, and the pensions and profit-sharing will be weak or continue to be destroyed at all but about three airlines, or so. Most are up to their eyeballs in debt. A few aren't.
(The parallels to telecom are pretty high. Seniority-based, powerful -- but losing power -- Unions with weak teeth, executives raiding the cash box and not investing in the company, etc.)
As far as my *preference* on MX goes, I'm allowed to have one. I think mine's better for me than "Let's meet the MEL and get the bird back in the air." I don't have the option to choose an airline that doesn't defer things just long enough to get to a hub/MX facility. That Unicorn mythical airline doesn't exist.
So I'm not naive. As long as there is an MEL, some broke-ass airline (or ten) will push it right to the limits, every day.
Here's a thought... publish the squawk list. Let the Market decide. That's be an interesting exercise in checks-and-balances. See if an analyst company pops up to educate the flying public on which ones are good calls and which ones are red flags that the carrier is cutting corners as much as allowed by law.
As far as my own bird goes, everyone who flies in it is welcome to know of anything and everything we're aware is wrong and/or deferred. In fact, I'll probably point it out during the pre-flight and explain it.
(I've never been offered the squawk list for my perusal at the airline gate. That's be fun.)
Our cowl flap cable had a problem last week. Our mechanic offered up two legal ways to fix it.
One was to re-do a fix that wasn't optimal but would probably last for five or six years.
The other was to order the overpriced certified complete cable assembly and replace it.
We chose Door #2. Fix it right.
The other side was also already done the cheap way by a previous owner. We deferred that one but pre-"voted" that as soon as it fails, it'll be fixed with a new cable assembly also.
We almost did both, but paying to fix something that's actually working correctly didn't seem prudent.
Fixing the broken cable on the other side the right way, was prudent. It'll last another 20 years or more instead of six. The bird's 35 years old and hobbled by the requirement to use parts certified 35 years ago, or you play "Go Fish" for a better solution via STC.
So yeah, we defer stuff that works correctly. We try not to defer stuff that's actually broken.
(We have one open squawk right now, it's a lighting issue. And I'm keeping an eye on the DG which is precessing a bit, but not after spin-up, and so far is stating within reason on the ground.)
In fact, that's one thing our little group all agrees on. One of the true benefits of ownership, especially in recreational aviation, is in having everything working.
We were all sick of rentals with big squawk sheets. If the rental places wouldn't do that, we probably wouldn't bother being owners. We'd just pay their higher prices.
In the end, the airlines get the job done. They're just slowly being managed into the ground.
It's just an opinion. I respect if y'all think they're doing everything necessary to maintain their birds and that's a big enough goal that they don't need to strive for better. I rarely have to fly commercially these days, and don't care to if I can avoid it.