I've certainly never flown it but the ILS Y RWY 22R at KDTW (Detroit) does permit simultaneous approaches to parallel runways. If the FAA can't fix the issue with taxiing planes blocking the ILS signal in the short term, they could at least NOTAM out the simultaneous approaches allowance. The Pilots would probably feel a lot better knowing that they aren't going to sideswipe another plane if they overshoot the localizer.
25 years ago they had someone specially assigned to monitor and maintain spacing for simultaneous approaches (I’ve seen it with my own eyes in the TRACON office). Difference is then is that (IIRC) they only had three instead of four parallel main runways and they didn’t have to worry about ILS interference. I’m blown away why they just won’t move the ILS antennae.
I'm just a weekend warrior and know nothing about this but why don't they use the RNAV W approach? It looks like it has minimums of 400' compared to 300'. That should work in most cases.