I agree with @harts that it could have done with more on why we need a quality cycling route - the stats/graphics from carsick would do.
The logic for me is that we have to tackle the obesity / pollution / congestion issues we face in this city.
We simply cannot continue the rate of transport growth without viable alternatives to single occupancy vehicles.
Active Travel is one of those alternatives but to make progress it needs to be compelling - i.e. what would it take to get you to cycle for transport once by bike (ref. Start on Friday).
A safe direct, pleasant route you say... (same as everyone else - ref centreparcs where everyone cycles)
Right then how do we connect one from Roseburn Park to Haymarket/George St.
The biggest problem is getting from the South of the A8 to the North. There are 3 option, Roseburn Gardens, Roseburn Street & Haymarket's Yard.
Roseburn Gardens
+ve wide road, closest to Park, stops it being a rat run, bring cyclists in heart of Roseburn
-ve takes away loading bays on Roseburn Terrace (you might think this is a positive)
Roseburn St
+ve avoid impacting Roseburn Terrace
-ve very narrow gap between Tesco & Roseburn pub, meaning cyclists couldn't go simultaneously with other vehicles so an extra phase in traffic lights meaning slower for everyone
One solution here would be to block Russell road at say Railway bridge to reduce the traffic going through the gap so traffic + cycles could go at once.
Haymarket's Yard.
+ve can leave main road untouched
-ve hilly, convoluted, narrow and dangerous tram tracks. I have had it suggested that a tunnel could be put through the zigzag embankment ( not sure how appealing that would be) and one if the pavements in Haymarket's Yard turned shared use.
The West pavement would stop you having to cross the tram tracks but that isn't very wide and is the busiest with peds. The East Pavement is quieter but you have to cross the tracks to get to it and then again at the top of the hill, getting either of them at a correct 90degree angle will be impossible so doesn't work either.
But to me the fundamental problem with Haymarket Yards is that it is not as compelling to get someone to make their first trip as seeing a lovely safe direct route out of their car/ bus window.
(I could be wrong here but I heard that the Channel tunnel rail link was built next to the motorway in France so that you could see just how fast it was compared to your measely 130kph)
This does then lead me back to the first option being the one that works best and will help Edinburgh make the step change we want to see.
As said above, I do fear we lose people if we jump straight to the 'it must be Roseburn Gardens' argument without walking then through why it is important to have a compelling safe direct route in the first place.
Remember they aren't building this for us - we already cycle - they are building it so that it attracts others to start cycling and the community benefits from reduced pollution /obesity/congestion as a result.