Judge, don't have time to answer all, but IMO RAH gave a contract to stop the operational bleeding (canceling 30-50 flights a day) knowing a BK filing was around the corner that would wipe out the "exorbitant" pay rates. Most knew this was going to happen, except for the poor sheep who flocked there.
The crux of the problem with regionals/contract flying, and I'll use Mesa as an example, is that they are FFD (fee for departure), so costs are fixed. We don't sell tickets, we don't buy fuel, in the case of 30 of our ejets, we don't pay financing/leasing costs (they are owned by UAL). We get paid to operate the contract feed. Labor demand has gone up significantly in the last year or two, and the market has had to adjust accordingly. But the contracts to fly all this regional feed were set when labor rates were low, so while mainline is posting record profits, we aren't getting a piece of the pie. If supply and demand further reduces sustainable regional feed, causing regionals to consolidate, at some point when labor cost hits a certain point it won't be cost effective to contract out the flying, which is one reason we are seeing some flying back at mainline (e190s/717s at DL/etc). Mesa's margins are so thin, that unless it renegotiated FFD rates with UA/AA, it can't afford an uptick in labor costs, which is why JO hasn't given more than a nickel (and in fact took money from captains a few years ago with the 76/79 seat debacle) and drags out negotiations for 5 years...no loss for him.
ALPA national of course doesn't care, because 2% of peanuts = peanuts, and their pay is primarily from mainline. ALPA and management (mainline and regional) allowed this RJ "c scale" to exist, voted in by mainline pilots to protect their interests (while they still got wiped out) over the last 15 or so years. ALPA national, when questioned about our horrid contracts, says its up to our individual MEC to negotiate and it can't help us out. So what do they provide? A bad lawyer, John Dean, who has screwed us in the last 3 contracts by allowing loose language which was exploited by the company (and still hasn't learned his lesson...I think because it provides him work settling future grievances over the language but that's just my theory), and some other unimpressive help. They don't help a whole lot with grievances. The one thing they do well is protect jobs if someone gets fired. Without the union the company would walk all over us and fire us at will, destroy our PRIA, etc., and we would have to foot the legal bill. With a union, legal disputes come out of national's coffers. They also help with scheduling issues, teaching how to use PBS, etc., and are good about that. National also wants money all the time for their super PAC, spending tons of money fighting ME3/open skies (which our govt should be doing anyway for the good of our country), fighting 3rd class medical reform (don't know why they dabble with that...waste of money), and some other projects they lobby for.
You'll see the union's sales job in a few days, they will explain why they do more, but it took me a while in the industry to see why airline management has so much leverage/control over labor, especially at the regionals.