[SG] Two fire actions

Has anyone tried a houserule allowing two fire actions by the squad
per turn?  Not "allowing a unit to split its fire", but allowing the
same troops to fire twice.  That would improve life for the defenders,
which sounds realistic.  It would also increase the value of placing
suppressions--even if your target always removes suppressions with one
try, that unsuppress is going to take time away from his shooting,
which it currently does not.  Comment?