Not that it did not have its oppressive points. When the Chinese tried to stop the Brits selling opium to their country, we sailed a few ships to Guangzhou and cheerfully shelled it until they changed their minds- though again, that was about the money, not any form of Chinese conquest.
But the Empire as a whole relied not on oppression, but greed- the greed of the locals who would help us because they too would become rich, as much as our own greed.
And in generating money it also generated advancement and security and develoment and ots of other things which it would be silly to ignore...
... but it was still divorced from morality. It might not have been actively evil but when its money supply was threatened, ethics went out the window.
Still, seem to have been drawn off-topic a bit... the Commowealth of today might be mainly ireelvant but I find it rather touching. It also gives a large number of countries a certain voice and common community (and goes to show that the Imperial Legacy wasn't THAT hostile- places like Palastine hate the UK, who did indeed conquer them militarily, far more than nearly all ex-Imperial nations).
And so it is very unlikely we would turn arms against them. Mind you, member nations have been suspended before.