This post may change in response to comments in other posts.
Not abandoning the longrunning thread, but after T&E and before the SG, thought it might be worth putting together the things that *most* people might agree on.
Segregated cyclelane on West Coates (preferably on each side of the road, but...)
Continuation along the first part of Roseburn Terrace as far as Roseburn Street.
Redesign of RT, RSt and Russell Road junctions to include proper pedestrian crossing provision (especially across RT from the Roseburn Bar towards Vigo).
Ideally there should be no right turn (eastbound into RSt/RRd) but this seems unlikely.
I think more work by CEC is required here. First a proper traffic survey to find why vehicles are turning right. Followed by modelling to see the effect of removing the right hand filter (at least at 'rush' hour - when the bus lanes are operating.) This would mean that there would be a proper bus only lane going towards Haymarket. This would disadvantage westbound traffic, but modelling might show little affect on volumes or journey times (though in any case part of the point of all this is to discourage general traffic by advantaging other modes - particularly buses).
Stopping the Roseburn Place/Gardens rat run.
Finishing the shared use path all the way along Russell Road to RSt (and integration with pedestrian crossing provision).
Better pedestrian 'experience' on Roseburn Terrace.
More, prosperous, shops.
Council Tax reductions for RT premises while any road/pavement/traffic lights works go on (if significant).
Some genuine parking on RT not just "loading" which is easy to abuse and difficult to enforce.
'Outlining' marks on the road where the cycle lanes and buildouts etc. might go (prefaced by notifications that this was going to happen).
Possibly followed by experimental kerbs and planters to assess issues of pavement/road/lane width, turning circles at junctions etc.
And?