Bought a small brick Colonial last June.

Attic has blown-in fiberglass between the joists on the floor. The
joists are covered with plywood.

I want to keep using the attic for storage, but I also want to
insulate it better. Also, the fiberglass fill seems to generate lots
of unpleasant dust.

My questions:

(1) Would fiberglass batts generate less of that dust? Right now when
I go up there, I feel like I have to wear a cheap respirator, and over
time the dust gets on the stuff we put up there, which is annoying.
(If it were just general dust, I wouldn't care, but I get worried that
it's fiberglass dust.)

(2) Insulation-wise, the space under the "floor" (height of joists) is
a little less than 6". Reading about insulation on-line, seems like
that's not a lot of insulation---so it might not even be worth
insulating better. (Apart from the dust issue.) If we add more,
though, we'd either have to get rid of the floor boards and have no
storage space, or, as a friend suggested, increase the height by
nailing some wood on top of the joists, then putting the floor boards
on top of that. Is that a good idea?

TIA,

S