How can we improve WHMCS?

If your email gets attacked and import fails // hangs -- or for any other reason it hangs, all the email accounts are being blocked from that forward.
This means issues with one of the imports will cause everything to fail.

This is very trivial to accomplish as well.

Therefore, launch as new processes in the background each.
ie. shell_exec('nohup crons/pop .... ')

This allows rest of the imports function, only the affected account will not function.