Whelp, first off, for the people living under a rock for the past 3 years, OP mode is a mode where all the weapons, armor, and items are buffed. This mode is only turned on when the donors vote on it before the beginning of a match. Unsurprisingly, this practically guarantees that you WILL play it every time a donor that is gold rank or higher enters the match.
At first, OP mode sounds like fun, but just like eating a kinda good food every day, it gets repetitive, boring, and frustrating when the only reason your opponent won is because they had better armor and weapons than you, or if you won, you felt like it was from pure luck. Which most of the time, it is. Long gone are the days of strategizing, getting weapons and armor, and going through with that plan, always knowing that it could be your only shot, and in coming are the days of getting full iron, and spam rushing since its incredibly easy to do so on certain maps. Now, this has always been a problem, but OP mode makes is 5X worse by giving the armor Protection V and weapons Sharpness 2 (Except for the ultimate sword (Sharp V diamond sword), which still doesnt do enough damage to balance out with the armor), making it so that you take barely any damage from any attacks, unless your opponent has a weapons that isn't basically a wet noodle on a stick. To people like me, this seems lazy, and it seems to make the experience worse instead of better, so here are a few ideas to make it better without outright removing it, since, as it stands right now, that would require a dangerous amount of damage control.
1. Nerf enchantments: Just basically decrease the amount of protection you would get with certain armor sets. Its ridiculous that a guy in full iron has a RIDICULOUS disadvantage in a normal duel against a full diamond guy since the 'duel of numbers' is on his side, since he has objectively better equipment, since every armor set has the same prot value, making it a chore, so when they duel said full diamond person, when they think they are going to win (most of the time) and instead get creamed since they lost the duel of numbers. The idea would include: The stronger the armor naturally is, the lower its protection enchantment. EX: Iron-Prot 3, Diamond-Prot 2.(just as a general idea of what im talking about) Even hitting a full diamond person with the strongest sword: (Sharp V diamond) is like hitting a tank with a katana. It does SOMETHING, but it isn't all that fun to take it down.
2. Special items all of the time, for all of the maps, and specific items for each map: I know in certain maps, they allow you to use emeralds to buy items that have special effects, these are similar, except instead of just giving enchantments (some of which are just cheese) they do special things, making the items feel more unique instead of just an item with a bunch of numbers that mean that either its trash, or its broken. EX: Grappling hook (Tripwire) (Right click to shoot out a X block long beam that, if it connects to a block, it sends the player in a 90 degree drop toward the location of where the item hit on the Z-axis.) They also should be different based on map, so you arent going to get an item thats useless for the map you are currently on because of the layout of the map. EX: getting a grappling hook on a mostly flat map. There should be items made to make your time playing specific maps much more unique, instead of it just being new maps that are different. The items should also change based on the mode, so OP mode has its unique set, Normal mode has its unique set, and Hardcore mode has its unique set. It should be made so either of the three sets look interesting, rather than just making the OP mode ones the best since the community likes it so much. C'mon, give the other modes some love!
This one isn't specifically for OP mode, but it could help with the inflation of a specific map, or maps that are unavailable (Whether that be because of a glitch, its full, or its a game that just started)
3. Change the way you choose a map slightly: This one is simple, just make it so that, instead of a board, its an inventory filled with random maps (Just how the normal board works) instead of the specific ones the donors have access to. (Still think thats stupid, but whatever)
These are just a few things i see can help make Op mode, eggwars, and the way you choose a game, less irritating and more unique. There are probably more, but for right now, these are 3 of the big ideas i have.