Adrien I think we should not ruin other people's feature request unless we know what we're talking about.
I've been in this industry for 16+ years and I know exactly what I'm talking about. I also fully understand this feature request.
It is a step towards billing capabilities, Stripe gets added, PayPal gets requested, before we know it someone wants Enhance to create invoices, add a support system...
There's already so many solutions that handle billing very well and won't lock you down to a single panel.
Take a look at the roadmap, important features have been pushed back several times already and there's still no mention of improving features that clearly need it.
This forum is supposed to be a place to give opinions - sorry if you don't like mine.