i think the point is getting missed somewhere in translation. When we say take care of your tranny and what not, it has nothing to do with boost or turning speed or anything like that. We're talking about properly rev matching, and properly double clutching. the whole bit.
do you know you technically don't even need your clutch to shift? you really only need it to get the car moving. From there, if you rev match perfectly, you can shift without the clutch.
My suggestion to get better at being nice to your tranny is to learn to double clutch. when you double clutch, (and pay attention) you start to learn when and where your gears are. Once you get better at it, you'll be able to do it while getting on it and shifting faster. just pay attention to what your car is telling you. you can learn alot about your car from the vibrations in your shifter. they are they, sutble, but they are there.
good luck with the rebuild and better luck next time