I donāt get the reasoning dropping linker for another pyro. Sure you have double the damage by yourself but link more than double the damage of everyone and that is very huge.
Plus herding mobs via hangman ensures you hit everyone with a fireball instead of trying to herd them one by one.
There is a reason linker is the most OP class.
While I know people always prefer solo (as do myself) there is no doubt that you will be needing a party (specially when raid comes out) and you may want the highest chance of people picking you over other party member. Everyone can dps, so you need to separate yourself with some utility buffs.
I am currently playing another character with another mage branch so I could have a deeper understand of the class as a whole.
Previous char level 200 Wiz>Pyro>Linker>Ele>Sorc>Nec
current level 110 Wiz>Cryo>Psy>Thau-----Chrono>Alch