As the maintainer and author of fakeroot-ng, I have to say I this bug
would have made much more sense to me had it been sent 41 days earlier.
If you think namespaces provide a better solution to the problem
fakeroot addresses, I believe a better solution is for you to write
"fakeroot-ns" and introduce it to Debian. It is the open source way of
solving such difference of opinion. It would sure make me happy to see
another alternative implementation. Judging from Clint Adam's reaction
to fakeroot-ng, I'm guessing his reaction will be no different.
Alternatively, you can also run "update-alternatives --config fakeroot"
and default it to running fakeroot-ng. This you can do with no change to
Debian at all.
This isn't a bug on my package, so it's not my judgement call to make,
but I'd vote to close with no action taken.