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Looking at the map I'd mainly agree. That bus lane is virtually always fine, the only possible improvement will be if you're heading straight on going west at the Holloway Rd junction which can sometimes be a bit unpleasant. Not sure what the plan is with that (if anything).
The bit where it would be most beneficial would be heading east by Finsbury Park station but it stops just before that.
Turning left off Seven Sisters Rd will be fun.
Isledon/Tollington already has a pretty deserted bus lane, really don't see the point there. If anything, trying to fit cycle lanes and bus stops around each other just makes everything worse.