Any studio/director you want to see get their hands on Kimetsu No Yaiba & Yuragi? I know it was talked about before but now the possibility is more likely than ever and opinions could change.
I think David Pro learned from DiU's anime, while I loved it, it had a lot out-sourcing and looked off at times. They also had like 2 other animes running around the same time. So with part 5 I think they're taking their time and since it's the most action packed in the franchise, it's best if they do. I want a split-cour with part 5 tbh.
Apparently part 5 is the most popular part (?) and that could be the reason why they want to take their time with it. For sure it will be the hardest to animate with arcs like White Album/Notorious B.I.G/Green Day/Oasis arcs are going to be tricky and many others. I'm hyped for part 5 anime the most and wonder how successful it'll be, maybe a fujoshi push too