Skills to Empower for Tanks?

[Loveless]

I've looked at several places but I was wondering what and how I should empower skills for a full END tank. So far I haven't used up any points and would like to know from player experiences what worked out.

I'm guessing that most would be decreasing SP consumption. Also, I was wondering if I should get the next level of the skills if they become available and if so, which ones?

Thanks in advance. IF there is already a thread or a certain place where it has the info then sorry about making this thread. >P Still would like to know.