Those would be very nice, I've used Bunq intensively in the Netherlands when I stayed there. But since moving to Belgium I had to switch to a Belgian bank, since the Belgian government distrusts foreign bank accounts (doesn't accept them for official business, makes you write up an overview of all foreign bank accounts every year, etc.)
But compared to the features Bunq offers, these Belgian banks quite simply suck... It's mind boggling how many times I've already felt like I've travelled back in time and I'm stuck using banking services invented a decade ago...
Whenever Belgian IBAN's become a thing: I'll be the first to come back to Bunq as my main bank, so guys, if you're reading this, get on with it! ;)