The profile structure has not changed much since the beginning. Some things have been added, but the overall structure remains the same. You'll only see noticeable improvement when you're dealing with tens of thousands of commands. Also, the recent massive speed increases are really only in the beta version (I think... I don't know... I just work here lol). When you say your profiles are loading slow, how many derived commands are you talking about and what version of VA are you using?