Possible changes for Brand (Miniature Rework/Mechanic addition)

So, Brand is not really in a bad spot, not in a op one either, but I just played him when I realized that with a few very small mechanical changes he could be just so more awesome - and life up to his theme as an immortal fire spirit instead of just being Random Fire Mage #74.

Also, disclaimer: this is not just a PLS BUFF BRAND thread, even tho the changes might suggest that. For them to work properly of course the rest of his kit would have to be tuned somehow.

So, his passive interacts with things that are burning, correct? And Brand is literally some dude that is on fire. So why do the spells not interact with him?

Q - Refunds mana costs if you SOMEHOW manage to get hit by it/ GivesFired Up-Buff (explained below) W - Restores some mana + gives the buff E - causes AoE explosion radiating from Brand (size a bit higher than the usual E-AoE range) and also gives Fired Up R - Ultimate can now bounce of Brand, also gives the buff with every bounce.

Now, what is "Fired Up"? While Brand is fired up his next basic attack or spell is empowered (what exactly it is I have not decided on. Less cooldown? Lower Costs?) and deals more damage. After using the spell/basic attack the buff is gone.

What I intend to do with these changes? Well, we all know Brand as AoE-damage mage, I just try giving him tools that could also put him right in the middle of the AoE (where in lore terms he's supposed to be. He's not causing an inferno. He IS the inferno). And I don't think that this would make him op either (altho the ultimate bounce change might be super strong in certain situations), especially since he is still a squishy and immobile mage who dies the moment someone drops the tinest bit of cc on him.

Also this is an good excuse to tune the passive damage down a little and move power to the active parts of the kit you as a player actually use...

So, what do you guys think of it?