All Brand's damage comes from his passive, why such a long CD? (Speaking Single Target)

His QWE combo isn't enough to kill anything past level 6, and his ultimate does no damage by itself, so why is there such a huge cooldown? Do you want him to be the one of the only mages who can't 100-0 his target with perfect play? I understand that changing the cooldown on his passive would buff his teamfight, but there are possible changes that can be made to ensure that once his first passive has detonated, only direct spells damage can reapply the passive. (This would prevent it from being reapplied by dopey teammates who walk into you and explode.)

Current state you QWE, then have to back off and wait for the passive to blow up then come off CD. Most mages just wait for the stun to wear off then retaliate, except their combo does have the potential to 100-0 him, especially since building multiple Doran's Rings isn't as effective anymore.

I get that he is a teamfighter, but other teamfighting mages certainly have the potential to kill their target in a rotation, and a lot of some of those do it with 3 damaging skills instead of 4, (Peoplelike Lux/Anivia don't have 4 damaging skils)

If someone is so badly positioned that they take 3 bounces (maximum for a single target) of my ult, they should take more than 300 damage.

Since it takes 3 stacks to detonate, perfect play gives him a maximum of 6 stacks from his four skills, the following situations can arise.

Situation 1: Poor play QWE + Passive > R Without thinking he ults. He won't get another round of his passive because his ult didn't bounce, so he isn't rewarded by a change to his passive, he will just get the base damage from his ult.

Situation 2 : Unlucky bounce/Poor pick QWE + Passive > RR He won't get another round of his passive because his ult didn't bounce back to the original target two additional times, so he isn't rewarded by a change to his passive, he will just get the base damage from the two bounces of his ult.

Situation 3: Good pick/position: _QWE + Passive > RRR + Passive _

Brand gets a good combo on someone poorly positioned, and gets rewarded with two detonations of his passive, rewarding him with a kill.

A change to the CD would only be rewarding him for good picks without rewarding bad ones, instead of giving him no kill pressure against most of the lineup.

I don't think Brand is weak, I can't even remember the last time I lost with him, but that doesn't mean it isn't incredibly frustrating to rely on other people to ensure a kill, especially when I have landed the highest possible damage combo from said champ.