Originally Posted by
Moisture
Going 10 or 20mm shorter is very unlikely to negatively impact the handling of the bike in any way. Nearly all bikes seem to be all jacked up these days, especially if they have front suspension.
This is wrong too. Seriously, Unterhausen and myself both build bicycle frames and have some knowledge and experience with bicycle frame geometry and the effects of changing the axle to crown length on an existing frame. Changing the axle to crown height has an effect on almost every other part of the frame. Making the fork shorter will make the head tube angle steeper, shorten the trail, lower the handlebar position, make the seat tube angle steeper and lower the bottom bracket. All of those will negatively impact the handling and fit of the bike.
I have seen your other threads about frame geometry and almost all of your assumptions and conclusions are incorrect. Please stop giving advice about frame geometry.