Developments:
Cypress Heights: I would be really interested to read about the source you have for the removal of the restriction. My most recent knowledge of the situation has been
this article on Cypress Village.
Grouse Heights
I think incorporating this into a larger Metro Vancouver Park would be a really good transition. The area is already used like a park already.
Seymour Heights
Maybe. I can't imagine it without protest (of which I would be one). There are many excellent Mountain Biking trails through the CMHC property. If you were to redevelop the lands, what would be your design?
Railway T-Intersection
Don't let my critisim deter you from this front. It's best to think about it as just needing more detailed thought. Ie. what will be the stations, what will be the time between stations, what is the specific alignment, how will it avoid delays from industrial rail traffic, how will it affect ridership using other modes currently (ie where will it draw it's ridership from and where does it connect people to).
Sometimes fantasies are far fetched but we do them anyways. Think of my cut and cover highway tunnel. No way in a million years will they move the electrical sub station, but I did the design anyways haha.
Dollarton Seabus
I think I disagree with you here. Even just a small ferry could have wonderfully positive economic impacts for Deep Cove and Port Moody. I would even bet that a ferry ride could be faster than a car could ever drive.
If you go farther with this, I would try to pick out where exactly the terminals should be, what anticipated traffic you might see and what size boat it would be (keep in mind a boat the size of the Seabus would be way too massive. Something inbetween that and the False Creek Ferry maybe?
Expanded Upper Levels
I agree with you - just trying to prompt you to look into what the designs might look like.
Lonsdale Gondola
I am only slightly joking haha. I am not against a gondola, but would need convincing it is the right solution, and that it could fit in without looking like a tangled mess of towers and wires. Also, skytrain up Lonsdale engineering wise is way less feasible than a gondola. The slopes are high in some parts of Lynn Valley but not all. The only way I could see a skytrain getting to Lynn Valley would be if it were to come east up 13th/Keith, up Lonsdale, turn right to the south edge of the highway going east, turn left up Lynn Valley Road.
Jericho Seabus
Don't get me wrong, as I commute to UBC I would love this, but I am concerned about cost efficiency? You are very very very close to Dundarave on your map. I think it is just a smidgen to east of where you currently terminate it.
Doing this kind of fantasizing work is definitely time consuming enough to call a hobby. It takes a lot of work to be informed about everything, to iterate through solutions, discover flaws and then redo everything. Don't be dismayed if you don't get it right on the first time through. None of us do, and neither do the politicians which is why we are on here in the first place haha.