With respect to landing, do you need to increase your flare height slightly and use "stronger" inputs to compensate for the decrease in lift, or does your increase in speed make up for that?
Yes.
You will go faster, so inputs will have a stronger effect, but because of the extra speed, you may feel that the controls require more strength (or not, depending on the specific canopy, wingload, etc...)
And, Ryoder: ah ha!
So... everything should be about the same. The increased speed from the decrease in DA will increase lift to normal. Controls should require the same input because of the same lift being generated... it's just happening faster. By stronger I meant that you would need more input than normal, but the extra speed should compensate. That is of course assuming everything equals out.