a little "off topic" and bound to upset the 'you cant do that crew' - but we've house-ruled ALL figures wearing terminator style armour [except those with two or more wounds {characters/oblitz etc} or those made up to T5 or higher {nurgles etc} to having TWO wounds against 'SHOOTING ATTACKS'. It may sound a little complicated but it seems to work.
We were finding all terminators were suffering from the massive amounts of st6 + and ap2 / ap1 weaponry now available in new codexes [ie newdar / tau / newde] also there are more and cheaper [pts] artillery units than can get lucky against terminator blobs.
Like almost all other units the 6th ed changes to cover saves also effects terminator types so the 'extra' resistance makes terminator armour more resilient to firepower; as it maybe should be !
we also considered giving a 4+ iv save v shooting instead - but this seemed to still result in 'terminator evaporation' in certain circumstances.
perhaps people could give it a whirl in 'non-tournament' games and see what they think?