It's a GWR▸ managed station isn't it?, with only one daily GWR train and approx 75 Heathrow Connects. I doubt GWR will be in any hurry to get their paintbrushes out.
I thought Heathrow Connect was a joint service with GWR
Heathrow Connect is listed as a
TOC▸ in its own right. I don't think it's a real TOC, more of a man and a phone in an office (dog optional). And it will of course disappear in a puff of spare rolling stock next year.
Whatever is done to the station is down to Crossrail/
TfL» . They are promising stuff like
Hanwell station will benefit from a number of improvements in preparation for the new Elizabeth line services, including a new station information system, security systems and CCTV▸ .
Transport for London will install lifts at the station before the first Elizabeth services begin in 2019.
Crossrail has also been working with Ealing Council on plans to improve the area around the station. Early proposals were published in 2014.
and some of it has happened (at least, opening the subway to the now-less-misnamed Station Approach).