Here's a thought that just occurred to me. According to
http://www.wizards.com/default.asp?x=dnd/ex/20060802a&page=2, the Weapon Aptitude feat gives you this ability:
"Each morning, you can spend 1 hour in weapon practice to change the designated weapon for any feat you have that applies only to a single weapon (such as Weapon Focus). You must have the newly designated weapon available during your practice session to make this change. For example, if you wish to change the designated weapon for your Weapon Focus feat from greatsword to longsword, you must have a longsword available to practice with during your practice session."
Since all the Weapon Proficiency feats now apply to a single weapon, does that mean the Weapon Aptitude applies to proficiency feats also? For instance, if I have Weapon Proficiency(longsword), by using the Weapon Aptitude feat, can I exchange that for, say, Weapon Proficiency(bastard sword)?
(The current PRC implementation of Warblade doesn't do this; I'm asking to see if I should change it).