I saw that post. Judges are certainly popular, and a hammer-wielding job is probably the most likely pick for the next tank, but Matsuno would likely need to consult on an Ivalician job. It might be possible for a Covosi expansion, however, potentially under a different name.

As an alternative, people have been eyeing Nero's gunhammer since ARR. If you want a tank utilizing a lot of ground/placeable effects, an Engineer could be the way to go. Analyze is the staple action, so that would likely be there in some form. One thing that we haven't seen yet is LoS-based mitigation, where you place a wall-shaped barrier and it intercepts damage from any source where it blocks LoS. You could have a placeable conveyer belt for fast movement, or perhaps place a party portal to connect two points on the arena. Perhaps you could mecha up with Maggie for some extra mitigation and damage.