Please tell me what I'm having to track extra.Provide ONE example of a situation where I would have to track anything.
Didn't you say earlier in the thread that you made use of a spreadsheet to ensure that the PCs got the appropriate refund when they did take a specialization that made those non-career skills into career skills? Under most definitions of the word, that falls under "tracking."
Also, I'm really not interested in getting into a pissing match with over this, with you or anyone else. You play the game your way, we'll play it our way. It's pretty **** clear that nobody else really agrees with your house rule, so you're probably better off just letting it go instead of trying to convince people that it's the best idea ever when they've made it clear they don't like your particular house rule.
Frankly, you might just be better off scrapping the whole "non-career" XP cost entirely, since it has the same end result as your method, with the added perk of it not mattering when or how the characters purchased their skill ranks.