Assuming she gets no more tweaks and changes during the beta before release, Dehya really does read like a Kuki case, where there will be characters released in the future that have amazing synergy with her. I'll admit right now that I'm by no means an advanced theorycrafter who crunches numbers, but I am really struggling to see where Dehya fits in to the current meta. My only hope is that she'll either be changed before release, future characters will enable her in a cool way or that there's something vitally important I'm missing from reading her kit that makes her really convenient as she currently is.
She cannot cause Vaporize reactions with her elemental burst, which instantly is a massive loss of potential for her because Yelan/Xingqiu are insanely broken and carry most other Pyro users. Her Pyro application, while off-field is a good fit, seems a bit too slow for Burgeon + no EM scaling. Her interruption/stagger resistance mechanics might be good enough to make her a viable alternative to a dedicated shield character? It's gonna be difficult to compete with the existing roster of shielders though. They're all quite good. Which leaves mono pyro? Dehya/Xiangling/Bennett/Anemo (Kazuha for best results). That team will clear Abyss no problem but that's more because the three support characters are insanely busted than anything else. Also, would she even perform better than Klee in mono pyro?
The thought of Dehya being relegated to a Klee sidegrade in one already mediocre team comp is a sad one because I quite like her character.
I fully explored the first desert area before they added the indicators for the teleport waypoints to show whether they're below or above ground and I damn near lost my mind. I don't understand how Mihoyo think it's okay to add underground cave/tunnel systems that large and then skip a dedicated map for them. It made an otherwise fun experience (exploration) into an exercise of frustration. Thankfully the new desert is not nearly as bad with the underground stuff... Or maybe I just got better at exploring them, who knows.