Of course it would be an incredible dose of common sense if the 15 were to extend back Eastwood's through Portobello to eastfields given the the cutbacks on the 124 and my suspicions that the 26th will not cope. Furthermore doing this would restore the link lost between Portobello, Waverley station directly, Lothian road etc especially if they extended it either back to penicuik or at least two somewhere like Hillend
Perhaps be a a limited stop service out with the Waterloo place usher hall section
Bringing back the X15 wouldn’t be a bad thing to do.
It could work well if it was run by ECB, a bit like how the 39 and 40 were moved to ECB to become the 139 and 140. I believe the X15 could also do this and it would work, albeit with a different route number though.
Probably starting at Blindwells, then via it’s old route from Prestonpans to Penicuik (possibly terminating at Deanburn again?). Same limited stop pattern as before.
124 probably could be merged in with this somewhat and offer a combined 15 mins frequency. In my view make the 124 run as an all day X24 (this would be the same as the route during the peak hours) doing the route it did via Portobello.
Then lastly leave the 113 pretty much as it is now (and not like it will be next month). My previous suggestion about the X44 becoming the X13 would also be a useful thing to have.
26 would then need to be changed again. Both route and frequency. I’d like to see some 26’s serve Long Craigs and Blindwells one day once it’s built up enough.