I would prefer to have it balanced.
I would correct the unit.txt and give what is advertised in the Great Library. Except for the hospital, I think this is balanced well enough, so that we don't need to mess with it. And just remove that line.
By the way, you should check again the files you have submitted. For that use the Show Differences option from the Tortoise Log Messages dialog.
In particular you should check the GlHidden flag, and for some reason, I think you should be able to upgrade warriors if you can upgrade archers, too.