What usually seems to happen is that if someone hasn't heard any progress regarding a suggestion they made within a month or so (sometimes sooner) they 'bump' the topic in this forum. This seems to pretty well guarantee getting an update, either by one of the forum monitors or a member of the team who have been given the task of evaluating the artist. This procedure seems to work ok from what I have seen so far. Not all teams use progfreak, however - Prog Metal, Post/Math, RIO/Avant, Psyche, Heavy, Crossover & Neo
do use it, Eclectic, Symphonic, JRF and RPI all have used it in the past, but no longer do. The other teams have never used it as far as I know.
I wish all teams used this facility. I feel it is an excellent tool which gives us all a chance to follow the progress of our suggestions, but I can also understand why some team members might perhaps feel uncomfortable having their voting choices made 'public' in this way.