Add 'Echolist' capability to Tickfix

I'd like to be able to specify what FDN areas are visible/available to FTN downlinks. Currently a %LIST command to Tickfix will return a list of all defined file areas in tickit.ini. The problem with this is that multiple FTNs can be defined in that one file, and the downlink should not be able to see/connect to another FTN's file areas. With echomail (sbbsecho.ini) this is handled by using Echolists and Keys to separate out the lists of areas available to each downlink. Can that functionality be added to Tickfix?