i personaly farmed over 100.000 Forge Points and idk how many diamonds during the last 4-5 rounds, by using the alliances or not, took a look at the last posts and i will say that other than the League Points System, which is flawed and brings weaker Guilds to Leagues they don't have the manpower to be (and ends up frastrating) i do not see any other "problem".
players will always find a way to bring the game to their needs, call it alliances or agreements, or whatever, they will end up in that direction for their personal ingame benefits ofc.
what inno could do, is put the guilds that want that kind of gamestyle in a special league, which will not affect the smaller guilds so competition will be more interesting.
I remember the 1st 12 Diamond Maps, which where 10/12 or 11/12 1 single Diamond map if i am not mistaken, we used to create sides with 2-3 guilds and battle for our slot in Diamond which made it (idk if it was fun for the people who couldn't do 10.000 Battles, but for the people who love the Battle aspect was a joy) Fun.
After that 12th round, diamond maps increased in numbers, and at the moment are 4~6 in my world.
Ever since then, nobody has the chance to Battle, as all Strong Guilds are Divided the most times, with result to have maps without actual competetition (more like "Free-Farm" if they meet another Guild of their Strength)
I saw the Devs doing Changes in the Past, i also understand the capabilites of the community, so trying to be realistic, the players who would enjoy the "Farm" part, are for sure more, but maybe then, why "battle-grounds" ?
Cross-world (though will be unbalanced cause of the way different life-time of the worlds) sounded like a good idea in this thread, and another one i liked was a brand new separated tier.
won't be much active for the next months, but i spent a year of mine in this game, and i think that a lot of things can be improved (on which part idk, Devs know better !) - for Sure, Swaping Sectors and pushing 20 times weaker guilds into 4th ring ain't strategy, is pure "none-competition" impo.
cheers