Currently, how the WHMCS licence reseller module operates in regard to reissuing licences is the client has to contact your company's support team to get their licence reissued. Instead what I propose is that the user can reissue their licence within the client area without having to contact the support team.
This would allow for less of the support team's time taken up by easy requests and ease and accessibility for the user.
Since this is already possible on the admin side of WHMCS, it shouldn't be too difficult to integrate into the client-side.
This would be a great addition to the module.