General

I would suggest not to delete any of the characters.
I'd wait for when the classes come back.
I'm sure they'll include some event that goes with re-releasing them.
Though you'll might have to wait till next year?

Another option that you may or may not consider:
Delete your TB, create your Luminous as a place holder, and wait for a character slot expansion to re-create your TB.

Do note that:
http://maplestory.nexon.net/news/news/current/00FkE

Phantom link skill is very nice indeed
Now I feel I must make a Marksman hmmm...

[quote=Mica555]I only have 5 character slots
-13X kaiser
-90 KOC (thunderbreaker)
-70 Demon Slayer
-70 Canoneer
-193 I/L

Should I delete my kaiser and make a lumi? (Dont think I can get it to 13X)[/quote]

Wait a few months and they'll start giving out free Character slots again. You don't have to delete your Kaiser; but if you have all that time and you're up for the trouble by all means thats okay too.

I only have 5 character slots
-13X kaiser
-90 KOC (thunderbreaker)
-70 Demon Slayer
-70 Canoneer
-193 I/L

Should I delete my kaiser and make a lumi? (Dont think I can get it to 13X)

@strenling it's just very very convenient. and if you're going to say all of them, that includes Pirate's Blessing. just base Core stats has 3 matk and assuming 5 INT to 1 matk ratio, Core beats Pirate even before factoring the INT from core. not sure why people keep saying Core sucks when Pirate's blessing is still sliiiightly worse and Core can be reset to have way more matk. yes, there's 5% HP/MP but mages can take some of the most dmg out of all classes (and there's plenty of other sources)

OT: ALL Link Skills minus Kaiser. an All Mage deck would give a Mage the largest Range boost.

Jett is only amazing if you spend NX. My Jett core aura gives 33int and 31m.atk

^ Wuht. I don't use my Mihile skill and I'm perfectly fine. Even better, actually.
For the link skills, getting all of them is worth it in the end (Although one like Jett's isn't really that great.)
Cards that I feel are great for mages:
Ice Lightning, Blaze Wizard, and Evan (All in one set.) I/L + BW = Magic attack, Evan = chance to heal MP when you attack (GREAT with Chain Lightning), All-mages set effect = % of your MP goes towards your damage.
Marksman for crit (Love it), TB + Brawler for damage (I've heard it effects even mage's damages, apparently.)

Mikhail is a Must Have for an i/L
Phamtom is extremely useful
and i find AB link skills awesome as well

lvl you koc higher, if youre a mage get the mihile skill, stance = awesome, the cannoneer is nice boost in health= survival and stats, phantom= crit, luminous= pdr, so all of them are good