How can we improve WHMCS?

We get some orders from countries where 99% of them is fraud. We would like to have the option to create some kind of blocking of countries in the order forms.

Let's say that a client form a country on the block list tries to order (based on IP or chosen country/phone number in the registration) we can give them a warning or an extra step of validation (by a code/password provided by out team). The warning can be something like:
"You are chosen for an extra validation process. Please contact customer support to continue your order".

There might also be someone using whmcs that do not want to accept orders from a certain region or country.