Let me cite something which may, or may not, fit into Mur's frame of mind.
When I was mp3, all mp levels were allowed to attack each other, because the influx of new people, and the newness of the game overall (dark archers lvl 4 were like, the top and a new lvl 5 or even a maxed chaos archer was the summum of the summum), ensured that there were too few players to properly fight pvp. The fact that the difference between mp levels were small as well, ensured that people could fight other mp levels. Heck, mp levels was just a long way of getting more stats. Deetn for example, was mp8. All that was necessary was the player going through the storymode and then redo it again.
That changed when mp levels were restricted to only being able to fight their own levels. Around the same time (too lazy to look it up), Mur forced people with too few xp or too much xp, to go to their proper mp levels. This is a precedent he can, if he wants to, go back to.
But after a while, thanks to BigC, the xpcap was getting smashed on a regular basis. However, a new mplevel, such as mp6, was not the option as it would just postpone the problem.
Then there came a lovely new contest, in which people were invited to try and lose xp by themselves.
I believe it was No One and/or Dst who won... as usual ¬_¬.
However, since mp5 was supposed to be the level where you stop learning and start exploring the unknown, where you can truly achieve, instead of simply aspiring to, he removed the ability for mp3 and mp4 to lose xp.
February still has mp3-esque profile stat, heh, last time I spoke to him, he got a negative value for initiative. The only way he possibly have gotten to such high amounts of power is by increasing his VE and using angiens.
If history were to be repeated, access to angiens would become more difficult for mp3, the xp reset wish would become inaccessible for mp3 and february would be forced up, with maybe a slight 'reward' for circumventing the entire purpose of mp3 and its many restrictions.
To restrict mp3 to a max time limit, or too simply scrutinize mp3 and force them up later, would go against its purpose and one of mur's avid hobbies. Mp3 is a time for learning, not everyone learns at the same speed, scrutiny would be too slow and time wasting and mur likes to observe what people, so the fact that february was able to accomplish this is interesting at the very least, so it's more likely that mur won't make such drastic measure as putting a ridiculous cap on mp3.