I agree as well; however, that what it was initially designed for... If you however over that field, you will see a description of what each designator is... I just entered the data in accordance with the policies set forth by the RadioReference Admin team. For what it's worth, generally in a Phase II system, including the NJPSIC system, ALL talkgroups are TDMA capable and should be entered into the database as such; this way the newer scanners will already be setup to track both timeslots if/when they make the final conversion.
Just my two cents, but again, I'm not living in New Jersey anymore, so whatever you guys decide... In the meantime, I will simply follow the policies established.