It's likely that it would take another five years to come up with a way to resolve this choke point. If spending 100k now will quickly put more service on the line I think it's worth it.What would be needed is to signalize the section of track between the signal visible in the photo (which governs westward trains) and the signal on the eastside of the platform governing eastward movements out of the platform.
The simple part of that is just to make it possible for the CTC to detect an occupancy in that section. At the moment, trains fall off the CTC plant when they arrive at the platform. (The RTC currrently sees a "tag" on their console reminding them that the train is there, but there is no circuitry in the field protecting and assuring that).
The harder part is, there is a switch ladder at the east end of the platform. Either one or more switches in that ladder would have to be powered, and control added to those in the CTC, or a different procedure would have to be followed to operate those switches. As it stands today, those switches sit outside the CTC zone - so they can be operated manually without contacting the RTC or doing paperwork. That's important so trains can tie up or leave the yard tracks at Georgetown with minimum fuss. One would have to move the eastward signal which is currently at the east end of the switch ladder to the platform, and possibly add at least one eastward signal further up the ladder.
And then, the signals on either side of the platform that control entry to the platform would have to be reprogrammed to grant more favourable indications which might be different under different situations..... and the signals beyond those would have to be reprogrammed as their "approach" indications give advance warning of those "home signal" signal indications at the ends of the platform. And all of that would have to be tested.
Is it doable? Certainly - with money. The thing is, until there is certainty about the end design for the yard and the new trackage towards Guelph, all that effort would be wasted once further modifications to the track and signal layout are made. I suspect that's the reason for the lack of action..... everyone knows there are more changes in the works, and money and effort spent now would be only a temporary fix and thus a poor investment.