I hear you. You aren't going to get that feature added from a forum post though. If you want the feature added put in a feature request ticket at bugs.freenas.org
But, emails are the primary method of communication from your FreeNAS server to you. There is no good alternate to the emails. The stoplight that FreeNAS has isn't all encompassing. It only includes the worst of the worst problems. So I'd definitely rely on emails looong before a stoplight. Emails are sent from the UPS service, SMART monitoring, as well as all of the internally monitored processes. Many of which do not ever affect the stoplight.
So to be honest and blunt, I think you are giving way too much emphasis on the stoplight and need to give much more faith in the emails. Usually for a small business, even with just a few small servers or a few pieces of hardware, emails should be setup to be read and handled by someone in IT. Much of your hardware has support for emailing, growl, SMTP, etc. Those should be utilized as that's how your hardware warns you. I can't tell you how many people have not setup emails and lost data solely because of this oversight. Even if you aren't reading them the second the post, even reading them within 24 hours is far better than the stoplight will ever be.
Emails should be your primary concern, your primary communication from your server, and your primary responsibility to read before deleting(even if its a weekend and you are out of town.. Monday isn't too much to wait for a server that is well designed and administered).
If you've setup your server properly you should never have to log into it to check it as your server is fully capable of monitoring itself and informing you of any problem. I have friends that have servers that are setup to self-monitor. I don't ever log into them, some for more than a year(except to update the OS), but the emails validate that everything is just fine.