Yeah, they spoke about that on Arsecast. We had Saka playing at left back and Ozil at 10 so our attacking 5 was actually full of forwards rather than wingbacks. If you want to make it a bit more dynamic, you could drop Xhaka for Tierney in a back 3 and Saka at LWB/LCM and then play:
Luiz - Gabriel
Bellerin - Partey - Ceballos
Pepe - Auba - Nelson - Saka - Tierny
That being said, Liverpool do pretty much the same thing. Their attacking 5 consists of two full backs, Mane, Salah and Firminho. Their centre mids are still involved in the buildup and can link with the attack, but they don't do much of the creating itself. Look at their big chances created last season:
TTA - 18
Roberton - 14
Salah - 13
Firmino - 10
Mane - 10
Folks complain that we're 'reliant' on the wings but it's just an easy way to create chances. My main issue with the wide centre mids that we played against Leicester isn't that they didn't get involved in the attacking 3rd, it's that they didn't get involved in the buildup at all. As you say, their role was very predictable and limited and made them very easy to stop. We had to rely on Luiz.