I fly a 777 which obviously DOES have roll our guidence, yet the minimum CatIIIa vis we operate to is 200,125,75 with a 50' DH.
Well, Wiz, I can't force you to take advantage of the current regs. I already quoted it for you, if you are fail operational even on CAT III A with DH 50 your MID RVR can be 75 M. No need to be cocky here Wiz, nothing posted by me is directed against you personally.
Why? Because the only time we are likely to be restricted to CatIIIa is if we carry an MEL or have an equipment failure which leaves us Fail Passive or without roll-out guidence- in which case the 50'/200m applies.
So I take it you don't fly to CAT III A only certified airdromes then? When we speak LVO it involves Aircraft, Crew, Airdrome, Operators Specs.