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

Please don't delete valid railway stations. (different codes)

Please don't remove valid tags (station=subway)

Hi
Please don't add the conflicting landuse tag to golf features. It's meant to be used as a stand-alone tag not a sub/adjective tag, Surface is the correct one to use.

landuse=grass

Hi
Welcome to OSM.
All UK railway stations are mapped as nodes.
node/5077066091#map=19/52.88819/-4.41616

This building should be tagged as a train_station.
way/182089979/

Hi
I note you didn't contact iccaldwell to ask why another primary tag, 'landuse' had erroneously been added to primary tag, 'leisure'. They conflict each other.

landuse=grass

leisure=common.
Half of this page discusses what's wrong with the tag & the main paragraph says how to tag it differently.

JOSM flags leisure=common as a error in it's validation process.

If the software you use is unable to cope with your expectations, may I suggest you contact the developers, or use other programs which allows it to function as you wish.
This is a routine I use, which you may find useful:
https://overpass-turbo.eu/s/1jVw

I contest it's not a "big edit". It's knowingly & intentionally kept within a single country. It neither crosses borders, oceans or continents.

Even as an Englishman I consider 'common' & 'village green' too quaint for OSM.

Hi
Please provide a specific link to an example that you've contributed?