Maplestory should have a "Pro" server

Maybe 2x EXP, 2x Damage, 4xHP. I am not really sure about the current curve at the lowest levels. For the anti bot boss to be effective it would need to at least take a couple of hours to reach level 10. (LOL, it sounds like I am describing Maple before Big bang)
Monsters will be more dangerous right from the start but also more worthwhile to defeat. It would take some time for a proper marketplace to form of course but eventually the (tradable) cubes eventually become less rare. The late game mobs will (in theory anyway) be matched by everyone having nearly perfect gears.

The storage restriction is to prevent anyone from steamrolling the boss.

I don't really understand the point of having Level 10 so hard to get. Everyone who will be able to join this server is already Level 150 on at least one character, and everyone knows that Level 1 - 10 is the most boring part of the game, because you only have Basic Attack and those useless Beginner skills. Even Nexon has realized this, the majority of new classes don't even have to deal with Level 1 - 9 anymore, and go straight to 10.

I can understand having a challenging boss to reach a job advancement, maybe 3rd or 4th, but at that point having your character perma-die will cause far too much frustration and would cause people to quit.

I can also understand wanting people to have to work to level, but the game would have to be redesigned to fix that issue, making monsters do more damage/give less exp/give more exp/increasing exp requirements will not fix it. It's a fundamental design flaw that has existed since the game was made.

Someone's comment got me thinking about the cube system, on this server they could be made EASY to craft and in bundles! (completed cubes would still drop and the cash shop versions would also still be available as a shortcut) Some balancing will probably be needed to not make them too easy to get.

Good potentials would almost be necessary for survival during late game.

That's a decent solution to the cube problem, for sure. Provided the materials to craft aren't as rare as pre-bb Scrolls =P