Hi nod
Deliberately restricting your stride length will not increase rise or sway.
As far as i can see, the top male dancers make both step 1 and 2 of the slow waltz natural turn large, with very soft knees(i.e. they're low on these steps). The sway comes about automatically from the need to control the energy of movement throughout step 3. With restricted movement, the sway will also be restricted, unless it's introduced artificially, which can look bad.
The lady of course is on the inside of the turn, so her movements are inevitable less, but the man should be controlling that.
And think of the second step as being forward also (hey!! do i sense a bit of deja vu?)