It is premature to claim that the standard monk will need any buff. For one, it is already excellent in all the areas it needs to excel in, and two, we need time to see how the tattooed monks really perform on the server.
Buffing another class is never a good reaction to a perception that something else is too strong. If something is too strong, proposing adjustments to said feature is always the way to go.
Sure, I agree it is a bit premature, and monk is an excellent class and fairly strong whether people realize it or not.
My main point with my post was to highlight that the adjustments made to tattooed monk are just too far into one direction.
Monks are already difficult to play and get into, and while this PRC does open roads to it more I don't think it'll help with the numbers too much.
It could be a very long while before we see what tattooed monks are properly capable of, though that doesn't exactly excuse the potential of the class in direct comparison to the base class.
I believe Cyber Viking's proposal for buffs are far too much as well; In fact, I don't think monk needs a large buff at all to keep it in step with the PRC with these changes, but it needs -something- that's a bit difficult to pin down. Again, and I probably sound like a broken record, Ki Strike +4 at 20 or an adjustment to the DR given would be perfect I feel at least.
I'll propose some adjustments to the PRC that I think would help keep it from being overly strong.
My main thought being keeping the casting time on the tattoos, especially since a majority of them now last an hour. It'll help from everything stacking all at once into some fighter shout-esque buff cannon since it stacks with standard buffs, making more of a emphasis on using what you need first in the situation you find yourself in rather than just smacking the entire row of tattoo charges.
I also think the dragonfly tattoo is a bit much as well, an hour and ten rounds of 5 dodge AC is pretty crazy and should probably be reverted back down to turn + turn per level.
The ability buffs I think are fine, and in line with how they probably should have been from the start.
Crescent Moon is a big egregious though, I would propose three charges rather than the full five.
Pine Tattoo is good, White Mask is good and the Crab Tattoo prereq is a good change as well.