The basic alerts are going to be very templated and limited as far as what you can design into them. Your best bet for getting the results you need will be to leverage the Advanced Alert Manager.
I also understand where you are coming from in consolidating all of your alerts to the basic alert manager but with the direction SolarWinds appears to be headed in and the feature options available with the Advanced Alert Manager, my recommendation to you would be to strongly consider migrating your alerts to the Advanced Alert engine and consolidate there.
Thanks for the response. That's what I was afraid of.