Saying that I'm mastering coro, would be a blatant lie!

But for what I read in the pods, coro has it's own distinct variable space. So sharing variables and closures might be very complicated.

And the docs from moritz for Perl6::GatherTake don't read as if he easily got along with coro.

IMHO the solution I'm suggesting would be much simpler and lightweight. Why not a KISS approach?