Some of these I agree with and some I don't I will list them below
********************************************************************************
Skywars -
Remove OP Mode - No, I along with a lot of other people like this mode
Add faster smelting plugin - Yes, this would be nice to see
More spacious maps - No, Skywars, in my opinion, has enough maps and is fast paced so no need for a spacious map in my opinion.
Less OP kits - No, I personally do not think any of the kits are OP
More iron ore - No need in my opinion as I believe that you can get enough iron tools or diamond tools in chests.
Even distribution of items in chests - Yes, I hate the way how the chests are distributed.
Removal of enchants in chests - No, I like enchants and think it should stay
Diamond gear only at mid - I would have to disagree because that will make the first person at midway too overpowered and no way of you having a fair chance.
Chest refill - Yes, it should be added as Later in the game I would love to be getting gear, think it should be rarer gear when chests respawn though :)
Ender pearls at mid - Yes, I agree that ender pearls should only be available at mid.
Mob spawn vote option - No, I would not like to see mobs in this mode.
Get rid of flame weapons - Flame weapons, in my opinion, are balanced enough, You either get a choice in some chests, Sharp 1 Fire 1 or Sharp 4 no Fire.
Removal of campy maps like Pacman ugh - No, I like crampy maps as it is perfect for this mode as skywars is made to be a fast-paced game mode.
Remove all maps that have a far away mid - No, All the maps, in my opinion, are perfect, Also please keep in mind you did ask for more spacious maps :)
Make mid lower on flowers - No, I think the mid at flowers is perfect as is.
Add more water buckets to nether - No, I think water buckets should be rare to make it more of a tenser gameplay.
ADD. MORE. PICKAXES.
@Rigel_The_Star could not find a single one. - No, I find a lot of pickaxes in a lot of chests.
Arcade -
Hide and seek / skyblock - I agree, skyblock and Hide and Seek would be good additions.
In general-
Make fire aspect rarer
All knockback items should either be sword or axes to prevent you know what - No, I think that the knockback Items are perfect as is.
********************************************************************************
CONCLUSION - 5/19
Goodluck on your suggesiton though and have a wonderful day :)