Thoughts on the portal:
1) Biggest fail is trying to turn the portal into a plaza
2) Why does the LRT bridge have not only another pedestrian crossing, but one on either side? Pedestrian crossings of the lagoon already exist to the immediate east and immediate west. Keeping the bridge narrower will lessen it visual impact. Creating a redududant north-south pedestrian flow only adds to congestion
3) How about a restaurant building above the portal? I would offer excellent views and be far more utilized than a dead end plaza
4) I'm torn about providing pedestrian passage under the bridge by the portal. It would be dark, prone to ice build up and yet another spot for undesirables to congregate
5) Perhaps a wide ramp in the location of the stairways could minimize the jog in the pathway. Closer to the station, where the ramp is located in the image, could be another restaurant
6) Could the portal and bridge approach be shifted westward so that the pathway wouldn't have to make as sharp of a jog next to the Waterfront. This would likely be cost prohibative but even a 15m shift would make a difference. Perhaps eliminating the pedestrian pathways on either side of the tracks will allow the bridge to shift westward within the footprint shown in the image
7) Maybe enclose the section of the bridge through the park with something like this
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