How can we improve WHMCS?

TROY is the national payment scheme of Turkey. We are doing more or less the same thing like global card brands such as Discover, Mastercard and Visa. We have over 12 million cards in circulation in Turkey and we have been informed that TROY cards are not supported by the core product of WHMCS. On the payment page where customer types tha card details and does the purchase, whenever a TROY card detail is added screen populates an error message and the transaction does not start at all. TROY's regex code is : ^(?:9792|65\d{2}|36|2205)\d{12}$ and we request you to add TROY as a valid Card Type to your core product.