The Heater shield needs a visual buff.
http://wiki.spiralknights.com/Heater_Shield
It is a 5* shield that looks like a dull version of the 3* Scarlet Shield.
http://wiki.spiralknights.com/Scarlet_Shield
It is the same shape as the 3* Great Defender.
http://wiki.spiralknights.com/Great_Defender
It should be larger like the Mighty Defender, Aegis, and Crest of Almire.
http://wiki.spiralknights.com/Mighty_Defender
http://wiki.spiralknights.com/Aegis
http://wiki.spiralknights.com/Crest_of_Almire
So pretty much what I'm saying is to be consistent with the Heater Shield's star level it would be nice if the model was a re-skinned Mighty Defender with some sort of glow effect (so it looks like you could cook on it).
(Yeah, I know not exactly a high priority, but the breaker sets got fixed so why not this too. It would not take too much effort either)
*Edited after using a Heater for a while*
After using a Heater for a while I have kind of gotten attached to the shield's shape. I still feel like it deserves some sort of visual effect to make it appear hot though.
Also, I have found it to be a bit weak. It would be nice if the Elemental Defense was increased to bring it in line with the Grey Owlite Shield. I know you could argue that the Heater has less Elemental then the Owlite, because it has more Normal. The Heater also only has one status to the Owlite's two, so I think it would still balance out.
TLDNR: Size fine, but still needs to look hot. Elemental defense needs buff.
I Agree it does need a Visual Buff, but I don't want it to look like the Rest of the other Ones. Make it look Unique, like Red with Heat Waves Reflecting off of it.
+1 For the idea, though.