Chase closed my Marriott Reward business card w/o notice. I learned about it when I found the notice of closure in the pile of mail when we returned from an extended trip. It is not a biggie to me as I actually was planning to close the card. Reason is Inactivity for 6 months demonstrated that I (my business) did not need the card any more.

Visa Signature is a non-reporting card anyway - therefore whatever high credit OP has, unless he has charged up to that limit, it would have NEVER shown on his credit report, thus NEVER goes into the calculation of his FICO. In fact, with the non-reporting cards, the utilization is always 1/1 - as the usage is being reported as the maximum balance for that month - the same as the usage. It actually could hurt your score if all your cards are the non-reporting variety. (Visa Signature, World Mastercard, many AMEX types).