hm game mechanic wise vs game descriptions
Mechanic wise the new proposed changes are making small shields able to block things that would be VERY difficult to block namely any form of a projectile like arrows for example.
I can see a medium shield having a higher block chance due to the inbetween size and lighter weight than a tower shield but a tower shield having a low block bonus than a tiny little wrist mounted shield does not make any sense. the small shields I feel would always have the lowest chance to block any attack the change may want to consider is instead adding a parry bonus ONLY to the small shields not the medium or large shields at best. Secondly a large shield that covers one body would make it much harder for a opponent to hit the user thus having a higher blocking chance than a tiny shield