The Reality of our "Content"

Nope, wouldn't be unrealistic at all. No matter what you do, people will find the easiest and most efficient mob. So you make a some mobs be weaker and then give them less EXP, but then you boost the spawn to compensate? I can almost guarantee that you would find the bulk of trainers at those monsters. So you make some maps more favorable to mobile classes and then make a flatter or smaller map for less mobile classes so it's fair? Virtually everyone will be at the flat map. Remove the party play bonus at LHC? Everyone flocks to Monster Park. Remove the party play bonus there? Everyone flocks to PQs.

I do enjoy how dramatic you make this seem. So a monster gives a significantly larger amount of EXP (while still being easy) compared to other monsters. What's the impact on me? Doesn't bother me at all. Hell, I don't even bother to go to Aliens until 115 since it's not even worth my time to go there any earlier. I'm honestly puzzled by the entire premise of this argument. You're not forced to go to Aliens (and etc.). You're leveling just as fast as you would without Aliens when you don't go to Aliens.

You're really talking up an issue that isn't much of an issue at all. Because as I mentioned earlier, no matter what you do, people will find the most efficient monster to grind on.

EDIT: Your pictures also skew the reality as well. Your pictures imply that by selecting a monster on the left, you are forgoing all those other monsters, implying that all of those other monsters are reasonable EXP. The reality is that there are only a handful of monsters people train on, even without the monsters on the left.

You can dissent and there's no problem with that but at least get the argument correct.

The gap between Monster Park and PQs is not as egregious as the gap between Aliens and the monsters listed. Your assumptions faster spawn+low exp = overcrowded don't agree with your views because of party play vs anything, Twisted Jesters vs any lvl70 mob, and Spirit Vikings vs Aliens. Also, Typhon Cliffs/Upper Ascent way back would have been completely empty by your logic yet it was a heavily trained map for mobile classes.

I'm glad you enjoy that sort of thing with that attitude: shows what kind of person you are. Also, I like how nonchalantly you point out these facts and not even care about them. How does this affect you? It's not about you. It's about the game. Seems like you don't care for the game but whatever, you don't have to. If Aliens disappear, the gaps between the rest of the content are actually manageable and alternatives to 2nd best are actually viable.

Path of least resistance and the scale of how much better this path is compared to 2nd/3rd. Same point as above.

There is an issue because of the scale. Again, same point. Seems like you'll continue ignoring a specific point.

Your EDIT: Put very simply, the ones on the left give more exp than the ones on the right. This isn't skewing reality: it's actually based on numbers. This of itself is typical but the main problem is how much greater the gap is between the two sides. And I seriously hope you just made this point wrong:

"Your pictures imply that by selecting a monster on the left, you are forgoing all those other monsters, implying that all of those other monsters are reasonable EXP."

If that is truly what you think, then you really are missing the point.

And even then, if you don't acknowledge it as even somewhat of an issue, it's fine if you believe training 3x longer as an alternative is a-okay. Your opinion is valid.