I don't think you know what you're talking about, so I'm out.

I'm about to revert your changeset, please don't make any further amendments.

I'm still curious/confused over what map/software would take you down a cul-de-sac given how previous layout.

Which map?

Hi
You didn't remove.

Unsure what to say except No, they aren't. There is no confusion.

Please stop mapping incorrectly.

There is a high kerb from the end of the fence to Claremont Blds, a clearly defined barrier.
The drop kerb is at the junction of Claremont Blds

You've erroneously attached the fence to Claremont Walk and detached the Western end of the path from the steps.

I walk these paths regularly.

Hi
This road is literally built on the old trackbed. Separate ways are inaccurate.

No it isn't.
https://www.google.co.uk/maps/@51.3952634,-2.3560358,3a,75y,187.35h,52.13t/data=!3m6!1e1!3m4!1s5EyCl02FryOm5mrAc2KkqA!2e0!7i13312!8i6656

Hi
node/1357032076

There is already a website tag. Please don't duplicate data

Thanks for spotting & reversing.

way/1006472848

Is this a hole?
The course's website don't list it.

Hi
Please use the prow_ref tag, not name.

prow_ref=*

Hi
Is this really a tee?
way/965098921/history

Actually I meant a tee. Looks a little large.

Hi
Is this definitely a green?
way/1077044557

Are you sure about this hole?:
way/996151051

There appears to be a tee/worn grass/fairway for it to the South East.

Hi
Please don't adjust or split the Cotswold AONB relation. It's location is officially set.

leisure=fishing

The 'modern' schema for all inland water features is now natural=water & water=river/canal/lake/pond etc.

On the actual water polygons, I'd use:
fishing=*

If this site is specificity for fishing, You may want to draw a large polygon around the site and tag that with leisure=fishing along with a name & any other relevant tags such as fee, opening times etc.

Hi
Are these actually canals?
Would the be better tagged as drains or ditches?
waterway=drain