It is what it is, and it derives mostly from having to raise the floor over the trucks, rather than a decision to skimp on kneeroom. The space just isn't there.
My observation is, yes, some folks are squeamish to intrude on others' personal space, so even one person in those quads deters others.... but pack the tram, and eventually those inhibitions disappear. Someone will want to sit down rather than be squished in the aisle.....and have the confidence to invade the space.
Personally, my gripe is more with the way the window pillar runs down the middle of what could be a much nicer quad.
On the bright side, one thing I have discovered that I love about Line 5 is the facing seats at the non-driving end of the tram. That's a very cosy and scenic place to ride. So far, those alcoves don't smell of urine the way the downtown Flexities' rear end space often do.
- Paul