What's Going On With This LMC?

Slightly rotated is normal. Anything up to about 20 degrees would be completely normal - almost expected.

I don't know about the line, but I can say you're looking too hard to make something of a coin. No offense intended, but if you're looking at the edges to try finding errors, you need more coins to look through.

No problem at all.

Here's a rule of thumb to think about:

If errors are what you seek, you should be able to see them without magnification and without strain. This being the case, any error really worth collecting should easily be detectable with the naked eye. In fact, if your non-collecting next door neighbor cannot see that there's something going on without help, then it's probably not a collectible error. MOST errors would not properly fit into a roll of coins for the denomination because they are messed up.

Of course there are exceptions to this rule, but for the better part it stands. So - if 'errors' are what you are after, a quick glance at ANY coin should tell you right away if it's collectible. Things like Machine Doubling, die cracks, minor die chips, polishing lines, and the like are not really collectible because they are common, they are not dramatic, and anyone who would want an example of these things can easily find one without having to pay any premium to acquire them.

Speaking of a coin like that did you know that someone did a painting inside of a penny before. They split the penny and did the painting but what I dont understand is the guy welded the outside of the penny back together. If the coin comes apart you might find a painting worth a few million dollars. Yes this coin is in circulation somewhere. What happened was the family didnt know there was a painting done by the man and threw the coins in circulation when he passed away.