Should this line be present in it's entirety? There are several areas, including where the note is dropped, where the line no longer exists.

9 Windsor Terrace

I think there are quite a few individual shops to be mapped along this street. It would benefit from a ground survey. #surveyme

missing public right of way going east here.

Wye Valley Greenway is supposedly opening 08/04. There are plenty of planning applications, but it's unclear what has been developed.
How much is open to the public?
Is this relation accurate & complete?
relation/11335129#map=14/51.6702/-2.6614

Is there a Premier Inn here?

Laura's Snack Shack, 19 Cross Street Aberdare CF44 7EG.

Speed limits need figuring out here; there seems to be a transition between 30 & 40 mph without any visible signs.

A48 is 40mph (although very lacking in repeater signs)

Cardiff Road northwest of A48 is signed dropping to 30mph

Cardiff Road southeast of A48 is unsigned - no start of a 30mph after the A48, but no 40mph repeaters on it either. 30mph seems most likely.

Mill Lane starts from the 40mph A48, and ends on Cardiff Road which we're guessing is a 30mph, but has no speed limit signs.