btw there are 2 solutions for the epic toughness lack of power; remove the odd number epic toughness feats and change the req, so there will be only 5 epic toughness feats, each one of them granting 40 hp... a little OP. another solution is to remove all the epic toughness except the number 2, so 1 feat = 40 hp, just like the toughness feat on lvl 40.
This second option is good if you balance all the classes by putting one tree of great_atributte (STr, dex, con...) based on the class main atributte as bonus feats for that class... Since each class will have a reduced number of feat options, this will be a compensation.