Framer : I could not agree more .
RAT5 : I thought we have visual APP because it increases both efficiency and capacity . As a controller, if you all want ILS only and 2NM spacing ? no problem for me , on the contrary , but this means you all get down to the same speed to the Kt from the OM onward...abut even then , wake turbulence separation is likely to upset that.
would there be a TCAS issue?
on parallel APPs? , normally no. TCAS will only give you an RA is your tracks are converging and further no RAs below 1000 ft anyway.