Hi Alex... A couple of tips if I may:
1) adjacent admin areas should share a way as the common boundary
2) more accurate community boundaries are available for download at https://www.spatialhub.scot/get-data/
3) the "place" or the "suburb" is rarely exactly equal to the admin boundary; it is probably better to consider adding separate objects to OSM for these (in the UK at least!)
4) check out the existing boundaries! The southern edge of Murrayfield should abut Gorgie/Dalry... see
way/595146498#map=16/55.9411/-3.2379

Hi Alex, can you confirm that all the boundaries that you have set to admin_level=10 are actually administrative boundaries? Are they community council areas, or have you got some other frame of reference?

Thanks Phil!

Hi trigpoint... I don't think you meant to change all these Civil Parish relations to admin_level=6, am I right?

You are indeed right that there are other CAs at admin level 6, but I still think this is wrong, or at least needs discussion. I will ask the mailing list to see if there is any consensus there. Apart from the admin level, it is open to question whether it should actually be an administrative boundary, as the public has basically zero interaction with them (apart from electing the mayor).

You do know about UK local government, don't you? Just checking, as you are clearly based in Germany and this seems to be your first edit to UK admin boundaries.

Also, I think the CA should have its own, new relation; it is intrinsically a different object to the former county council, despite the similarities in terms of boundaries. Shouldn't York be included in the CA as well, as a "non-constituent council" that has representation in the committees etc?

Has there been any discussion, and is there any consensus, about the tagging of CAs? In particular the use of admin_level=6 might be problematic in other cases where the constituent councils are unitary authorities, which are also tagged with admin_level=6. Possibly admin_level=5 might be more appropriate for CAs? It was formerly used for regions but I don't think they have any admin functions now so they should possibly be converted to boundary=statistical?

Hi... Just FYI, this changeset deleted a large number of relations including many admin boundaries. I assume that was a mistake... Another user has already reverted these deletions, but I recommend you try to prevent this kind of damage in the future!

OK I see. They may be coterminous with the civil parishes (admin_level=10) but they are different objects, which also have a legal "subarea" relationship to the same parent. It's not about "suitability" (which sounds a bit subjective) but a matter of a defined relationship. I think you have misunderstood the UK system...

Which relations exactly did you remove from Dover district? They may have been legitimate subareas. What were they "duplicating"?

Please leave admin boundaries alone, you cannot judge that from imagery. What's "node rationalisation"?

Following the discussion in the mailing list I have made Rockall part of the UK again.

Hi, Could you please discuss this in talk-gb? Anything that impacts the national border of the UK is potentially controversial and you should get consensus with the local community before making these changes. Thanks!

Hi, thanks for getting back to us. To post you have to sign up to the mailing list first, here: https://lists.openstreetmap.org/listinfo/talk-gb
Cheers,
Colin

I've put the question out there on the mailing list. Please join in.
https://lists.openstreetmap.org/pipermail/talk-gb/2020-June/024601.html

As this change could be regarded as controversial (as it involves national boundaries) could I ask that you raise it in a discussion forum such as the talk-gb mailing list?

surely rockall does not have an eez of its own, but it is within the uk's eez. are you not talking about the territorial claim and dispute with ireland? The EEZ limit is represented separately in OSM, and I don't think it is correct to remove Rockall from the UK's administrative jurisdiction, whatever the consequences of UNCLOS.
If you would like to treat Rockall as a disputed territory, we have a process for that which needs to be followed.

Why did you remove Rockall from the admin relation? Rockall is allegedly administratively part of the Western Isles according to Wikipedia... Do you have a more authoritative source?

Hi,
What criteria did you use for this change from Island to rock?