The EMT franchise is going to have to overcome that hurdle regardless though isn’t it? None of its HST’s are currently compliant and there doesn’t seem to be a plan...
It is not clear but the plan seems to be to grant derogations for the doors (and possibly toilets) but do the other PRM work. That wouldn't be acceptable as a long term measure. HST door replacements are proving extremely difficult, which no doubt means costly. If a partial derogation is granted for 2-3 years for use on the MML then there is no business case for doing the doors when Wabetc have the capacity, they will just be scrapped once the partial derogation expires.