How can we improve WHMCS?

Hi,
with continue to
https://requests.whmcs.com/idea/notes-invoice-merged
https://requests.whmcs.com/idea/auto-notes-invoice-merged
https://requests.whmcs.com/idea/merge-payment-functionality-improvements

Please add hook for merge invoice action, this should support merge invoice from admin side
allow to get all the involved invoice IDs so it's will be possible to add note, add invoice line or Everyone can do whatever they want with it.
split invoice already have hook, also bulk payment and merge from client area have ClientAreaPageMassPay hook, but merge invoice not, and it's very missing.

Thanks!