Ok here's my diplomatic response, interpret as you will.
Guys, lets keep in mind what you write online and through email anyone (FAA, newsmedia, bosses) can find potentially find out. So if I hypothetically admit that I'm not going to follow the rules, and later on I can be jammed up over it, then broadcasting that position online isn't very bright.
When you step beyond the flight training/instruction world things do change. Most feds know that I'd wager. They do audit maintenace records, and they'll see that 98% of things seem to have broken enroute. Do you really think they don't know what's going on?
The offical answer most of us should give from a legality standpoint is: "no to 1, no to 2, and land at the alternate in question 3."
Only you can decide for yourself what standard you'll honestly hold yourself to.
I'd be willing to bet good money that if you give the standard "always be as conservative as possible" answer to these interviews will in many cases get you the: thank you, we'll send you your rejection letter in the mail as soon as you're out the door. I'm not saying it's right, I'm staying it happens. Things can get interesting when the job market is bad and you need a job and bills are pilling up, and you have a family to support.
Everyone has their own comfort level for flying. Find out where yours is and stick to it. Stick up for yourself, its your certificate and your life.
With that said, what may scare the hell out of one pilot, may not even bug another. Say you could MEL that nav light? If flying that plane still scares you so much that you scrub the flight, IMO you need to grow a pair, or keep to VFR only sight seeing.
Even the crappy employers out there will often talk up how safe and professional they are, and that they'll back the pilot 100%. Then you get there and it may or may not be the case.
I know this doesn't answer any of the questions, it's just an opinion. It's worth what you paid for it.
I look at the questions not as right or wrong, but as ones that give an insight to your thought process. With number 2 for example: I'd have to ask: how will my plane handle taxing and T/O? If the engine fails and I have to abort, can I maintain control? etc etc.
Here's another one: you are on your T/O roll and notice the Captain has his safety belt unbuckled what would you do? Hint: telling him about it during the roll may be something to help keep him legal, but if you distract him, you're creating a dangerous situation. So maybe telling him about it later may be a better idea...