I'm going to guess from this post that you do not have Mid's Hero Designer.
www.cohplanner.com Go get it there and make best friends. It will serve you very well.
To answer your other question, once you have unlocked the Villain power pools they do not lock again. You can be hero and still respec into any one you want. Note that if you are a hero, you have to go over to villain side before you can unlock them, if you have no done so already.
EDIT: misread your second question. As far as I know you get access to APP's regardless of alignment.
I've been gone for a while, apologies for what I'm sure is a question that has been asked a multitude of times, BUT...
What are the power choices from 41-49 looking like these days? What Epic pools do Brutes have access to? Those of the Tanker, or Scrapper?
I'm in the process of getting my Stone Melee/Willpower Brute updated (he still has non-Inherent Fitness), and I was wondering what I should do for those power choices. Currently he doesn't have any APP or PPP, opting instead for Tough/Weave, but he'll be gaining three additional power choices, so I might as well, right?
And if I am to go with an APP, at what point can I respec and select from the APPs? Do I have to go full Hero, or can I be in the median Rogue stage?
Thanks.
Thanks for eight fun years, Paragon.