Why delete it? Even if you picked the 'wrong' AA's, between time training and even just doing the basic dungeons, you can easily catch the others up. Deleting it to reset just leaves you even further behind.
I also find it odd someone could play for any length of time, and not realize you had picked a whole bunch of awful AA's. They are spamming it in global all the time you need the AA's and 30 seconds work on forums or just plain asking would solve the problem.
But I get what you mean attitude wise - it would be good PR as such to allow it. But I just think it's unnecessary. Selecting a few 'wrong' AA's will at worst slow you down only a short period.
If I had a fresh 80, and was unsure, the first thing I would do would be to do a little forum research and ask some questions. Not just mindlessly click AA's without being sure what they do.
NOTE: Also, you can go on Test Live and get free AA points and play with specs, as much as you want.