homeguard - not sure I agree with your option (c). Lowering the downwind wing (albeit not vertical !) will cause the aircraft to be blown sideways making it very difficult to line up with the runway. Probably a/c dependant I should think.
The reason I am querying this is that a x-wind approach in a Pitts special requires downwind wing down and nose slightly into wind. I'm talking around 10 deg off runway centreline here with 5-10deg bank. Ok Pitts is a long nose short coupled tail tragger with lots of power.
A reversal to windward wing down takes place at the same time at flare to compensate for drift - of course you can't see out the front at this stage because of the nose hence head back and use peripheral vision to keep the a/c staight. It's wot the makes the Pitts fun.
Other benefit for slipping approach (x-wind or not) that seems to have been missed is that its an excellent and safe way to reduce height whilst maintaining airspeed and heading if high on final.