Perhaps this idea has already been implemented, but I will suggest it anyway.
Every now and then F-Secure has a major update requiring an installation, not just adding files. I assume it actually uninstalls the old version and installs the new one, which includes a check for competing AV products. I am not the only F-Secure user who also uses the Pro version of Malwarebytes and we do not want to be forced to reinstall Malwarebytes after an F-Secure update. I would like to suggest that F-Secure whitelist Malwarebytes so it is not uninstalled.