Ranged Weapons in Melee?

During playtesting of Guardians some issues came up regarding using ranged attacks in melee. If you can use them with no penalty, then there is no advantage in taking a melee attack ability.

The co-designer, David Pulver put it this way:

Do you think there should be any penalty for characters who try to use ranged attacks in melee? Like maybe a -2 or something? Just to further distinguish the brawlers from the shooters and give the former a little advantage when the fight gets close?
I guess this would come up in the other OSR games too, but while some refs will rule a longbow can't be used in melee, with guns or super powers obviously they can.
I admit to being of two minds here; maybe it would make a good "optional house rule" or something.

This is how it is currently written up in the Guardians rulebook:

There is a +0 “to-hit” bonus for ranged weapons utilized at short range (x1), a -1 “to-hit” penalty at medium range (x2), and a -2 penalty for long range (x3) attacks. Aiming for one interrupted round adds +1.

Ranged weapons have a -2 “to-hit” penalty at point blank or melee range.

Aiming, with sights for one interrupted round, adds +2.