The only reason I think they should keep it the same, is because the SBD was designed as a pegged container to be worth $1 USD worth of Steem. So the feeling is that one day it will fall back to its true value, or in fact just below it.
So perhaps that would cause confusion, though as I write it I think perhaps not.
Also I like the fact that people might get a nice surprise as they realise the dollar value is higher than they thought.
Hmm, it's got me thinking, very good points.