Like you say yourself Stephan: For an ILS all you have to do is correct the initial altitude, then be aware that your INDICATED alt over FAF will be higher than what says on the plate. Then correct your MDA, and you are safe.
For CANPA approach it will be slightly more complicated as you have check-altitudes all the way down.
To make a special cold-wx procedurre would be the surest way of messing things up. (only works for that specific temperature).
As long as your corrections are right, you fly the exact same profile as a std day. ( no 1000 fpm unless you fly fast
)
The pegasus airbus could probably be programmed with th exact temp to do the corrections for you, though i doubt Airbus will pay for it.
All you have to do is correct the crossing alt over the final waypoints. Our company dont let us fly CANPA in Final App mode, but the vertical dev bar is still there for crosschecking.
Fly safe, and correct your altitude