I would love to throw shields aside with a nice animation adjustment.
-However, I think it's not an issue. You can sheath your weapon, then drop the shield and draw your sword again in a short duration; if you have fast fingers.
What this usually mean is,
"I am a two hander who doesn't want shielders or archers to get buffed. We will continue to dominate the battlefield no matter what. BWAHAHAHA"
Or it may mean
"Just play your fuggin game. I don't want any innovations in this mod, everything is fine as it is."
(Yeah Sarcasm)