A user in a Telegram group dedicated to VIM showed me a very good solution:
:nnoremap <leader>. :normal .<cr>
this remaps .<leader>.
to allow a prefix with repeat count. In my case is mapped to the default value \
So I just type say 10\.
and it repeats cgn
10 times.
It even works in Eclipse's Vrapper.
But if anyone has a better solution I'd like to hear.