People here are rightly complaining about the pedestrian speeds. Unless Avoca has a catchment of 3k forget it, it would add another 3-4 minutes onto an already slow journey.
Its dead in the water as the full cost will be borne by someone other than Irish Rail, e.g. Wicklow CC who have no money
Any further discussion of infrastructural related matters in the appropriate forum
http://www.railusers.ie/forum/forumdisplay.php?f=29