Yes, I would agree there's more to like in Yoshida's résumé than Yamada's. It's a mixed bag, but a better mix.
As long as Dera maintains a leading role, I think the show has a chance to be pretty good. The minute it turns into those 4 girls preening for the camera (don't even get me started on the loli), it's all over as far as I'm concerned unless it's for very brief interludes.
I know you're a busy man so you might not have the time to look this up but Tamako Market staff interviews did reveal the bird would be pretty important
-Conversing with the bird sounds fun. What did you think about it when you joined, Yoshida-san?
Yoshida: It still doesn’t stand out to me now. Before I knew it, he had pushed to take the leading role. (laughs) I had wanted an outsider’s point of view, so his importance moved up as he could be involved in introductions to the rest of the people in the shopping district for the viewers.
Also while I'm no big Yamada fan (except her EDs,I love her EDs lol), I find screenwriter Yoshida to be quite a dependable writer who can deliver sold adaptations,see her work on Bakuman as an example.
Now you mention it, I think I have heard that... I still find it hard to believe people defend the way he treats Hiramaru. The thing is, for a less neurotic writer - and one with the ability to stand up for themselves (like Ashirogi) Yoshida is probably OK as an editor. Better than Miura, anyway. But what he does to Hiramaru is borderline evil.
Random trivia I'm not sure you know: in bakuman, Yoshida Kouji's manipulative personality is based on the real life editor of death note,that always gets my imagination going as to how editorial meetings went down