Asking for information and ~HBD MAzey Flyff~

Hai hai guys xD i was doing nothing in facebbok (just left from cabal 2... no ense in play a game when you 5 FPS in a dungeon ) and the last update in mazey popped up ! so i was thiking about comming back xDDD (yeah... the x2 donation and rarity thing seems to be insteresting ) but i want to ask thing first, so i wont rage quit once again (happened when mazey said something like "Omg! this class is bad for pvp ! but still can kill out beloved FM if played right! omg .... this cant happen! so lets nerf it, that way no1 will ever try to touch our Fms <3 " ... ok i guess i still mad about Mentalist nerf xDDD overeacting... xDDDD )

1- the beloved amaizing untouchables FMs still same way? 1hiting everything, not being killed by anything ? any nerf maybe?
2- Any changes to Mentalist/arca ? or they still trash in pvp (specially mentalist, since atleast, arca could farm)
3- Anything better or something that improves arum? (besides rarity...already read about that one)
4- Any news in collo so is worth to do it?

Thx for answers

1-FM's get their damage halved when they get 450m+ HP.
2-As far as I know, Arca is also nerfed: without RM buffs, its damage caps on 200m, with RM buffs there's no cap.
3-Not that I am aware of.
4-I think you can get more colo chips now and maybe the bosses HP are different now (there's an announcement about it)... I don't know exactly.

iRed's answers are all correct.

About number 4, yeah, you could get a lot of Colo chips. But they made Colo harder this time. A FD player will have a really hard time solo-ing it. I'm not sure if a player can solo it, but as far as I know, it's not possible. You need at least 3 FD players to do it. We are talking about Legendary mode. For normal mode, yeah, a player could solo it but less Colo chips compared to Legendary.