BOA is great with increases. They told me they like to see a lot of usage and PIF/carry small balances when I spoke to one of the CSRs in the credit department.
I tried to CLI and they asked why I didn't use my Platinum Plus Visa more. I replied because it doesn't have rewards. He then gave me 5k on a World Points Mastercard, which I then requested CLI to 10k and was given instant approval.
I then combined the Visa and now have a World Points card with a 20k limit. BOA is awesome.
Here we go again...