1- Stating the obvious is really that important to your ego? They, the devs, might as well do it because PVP is not even close to be a competition that could bear some impact on gameplay since it became a "friendly cesspoll where evebody wins something even when they are losing", and that opened the doors for a much more serious exploit as of late...
2- It's not the same, the number of battles is set. The results of these battles can be slightly skewed towards people who have more status by either being long time veterans + guild bonuses + Sentinels... But as the cost for the last levels of bonus is very prohibitive can you figure the math that USUALLY the bonuses from the Sentinels will not be something ever present? Now, if the Sentinels could be upgraded with GOLD ONLY as some people certainly desire, then it certainly would be a constant, and lame i must add, part of this new feature gameplay. Now your right conclusion about:
Yes, some people have no morals and will even spin excuses such as "They never stated it was against the rules." to protect their wicked interests... I'm as much outraged, or even more, than you over it, but that's not the place to express it or "try to sabbotage" the GW because they haven't, yet, said something about what they are doing over it. They probably can't share every detail with us so far because... how do i put it?... Ah, they want to get people "Red Handed".
3- They didn't asked for it, in fact, maybe they won't get a single penny from the players. But they surely should try because the game is a business...
I can only imagine Sirrian unconsolated in his office, his crying being cut by heavy hiccups while Ninhaim is outside asking if everything is okay... Ok, i must apologize beforehand, just in case, and i can understand your passion.
But sometimes delving very far into it is not exactly helpful. I know that you, me and others would like instant solutions to be applied to every problem we find in the game, but on the other hand the game needs to keep it's flow of new features at a reasonable speed to keep things fresh and attractive, so we must bear with it. And i'm honestly inclined to believe that the devs are working on the exploits as it does undermines the profitable chances the game has, but as i said they are not discussing it with us because they certainly have reasons.
I could see it as some criteria to avoid draws for a given place. Let's say that Guild X and Y ends up with the same number of points for the 1st Place, if they don't change the code of how the points per battle works, because it would be easier to add lines of code to calculate tie breakers i think.