I don't think that abandonment of EFPS is your biggest headache. Your problem, once it is installed, is going to be "what happens when (not if!) EFPS goes t*ts up?
I understand that your EGLL ATSAs have no input into virtually anything to do with the new tower, including a contingency for EFPS failure, which is when you, the controller, may very well be expecting just a little bit of help from your one and only ATSA. It might just be prudent to get them involved before the event , rather than during.
