This guy doesn't understand the basic principles of life. When certain aspects of life gives you crap, you fix it to avoid further occurences in the future. He shouldn't even be considering removal of members as that's just evading the issue, not even attempting at fixing it.
If he wants a successful T-ara, maybe he should be emphasizing fixes to the current members, such as investing in more training and more careful about minor issues he mentioned. Adding the 2 members may not even resolve these issues.
Although I guess changes are made and there's nothing we can do about it. Hopefully the 2 new members are likeable, cause Im going to find myself in a difficult position to accept this new changes after having T-ara being this way for the past year and a half or so.