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?

Hi
What's a "riverine"?
way/916582044/history

Hi
You've tag a few waterway=yes in this area. Any idea what type they are it would be great if you could get them to render.
https://overpass-turbo.eu/s/1jR5

Hi
You've tag a few waterway=yes in this area. Any idea what type they are it would be great if you could get them to render.

https://overpass-turbo.eu/s/1jR0

Hi
natural=grass is depreciated.
For meadows would surface or crop be better?
natural=*

'Recreation ground' tag makes no implication of accessibility.
'sport=multi' can be added to 'recreation ground' so show that many different sports are played on individual pitches.

As, by your own admittance, "The markings change throughout the year" shows that it not a pitch.

From the 'pitch' wiki page: "Pitches may be contained within a larger recreation_ground,"

A "multiple sports pitch" is for sports played within the *same* white line boundary, as noted.

leisure=pitch#Multi-sport_pitch

So what if "amenity=school doesn’t mention recreation ground anywhere"? It doesn't mean they can't be added.

The recreation ground’s page makes no mention of it being "publicly accessible". In fact it states the opposite.

Children playing sport is "general recreation".

not "having any forms of playground equipment within their borders" is irrelevant.

Given the close association of other leisures features such as pitch
park, playground, sports_centre, fitness_dtation, seating, dog park etc I firmly believe it should be tagged as leisure. leisure=recreation_ground renders on OSM-Carto

White line pitches "from different times of the year" can all be mapped, even if they overlap, such as cricket & football pitches.

None of your arguments prove your point.

Hi
What is this?
way/760831355#map=15/57.6063/-3.5897