[Phantasm]

Some of us are also Stubborn when we hit the hyper-focus. We'll stick with whatever it is that's got our attention, blocking out all external sources, and keep at it until we exhaust ourselves.

So common traits seem to be: Single-Minded (an advantage), Short Attention Span, Laziness, and Stubbornness (all three disadvantages). The Short Attention Span and Laziness often manifest together, as do the Single-Minded and Stubbornness.

I really can't think of an elegant way to combine the four. It might be suitable to just make a custom disadvantage that sometimes has beneficial side-effects.

YMMV, though.