I personally much prefer having a Pontiac ratcheting shifter. When going through the gears it allows you to focus on driving and not worry about shifting too far into third when going for second. This also may be an issue more on higher power cars that might cause you to inadvertently pull the shifter back to first when you hit second.
If you have to replace it anyway, why not go for the better shifter. This is going back a long time, but if my memory is correct the lower power automatics were not ratcheting while the higher power cars were.
My 73 TA came with a ratcheting shifter, while my 75 TA did not, my 78 TA W72 had it as well and also my 1980 TA came with one.