I love HxH and I love Togashi. But I'm not the type of fan who thinks he's perfect, sorry. Freedom is great, but sometimes even a genius needs a little guidance. The overexplanation of the current arc (distributed to a large cast of new characters), for example, prevents me from getting emotionally invested. And knowing the author, I know he's not doing it because he needs it, but simply because he wants to.
The thing is however that most of the current editors are in their 20s and early 30s. Most of them probably grew up watching the 1999 anime and reading the manga back in elementary/middle school. It becomes incredibly hard to say anything when you look up to a person like Togashi coupled with all the plot points he throws in. Lots of people in Japan had trouble even following the Hisoka vs Chrollo fight. While everything connected properly, people had to make flowcharts, etc. to properly understand everything. I'm sure there were people in the west that also had to do similar things to properly fully grasp the battle. Its entirely possible that giving guidance on these kinds of events is outside rookie/young editors's experience and maybe skillset. There's also the fact that when you take over you're basically thrown into this huge whirlpool of events that Togashi has months to fully plan out, though he may not actually draw the chapter. His style is to "have conversations with characters and have the story play out". His method of coming up with dialogue is also rather unique as he considers its a manzai skit. Each character says something and the other character almost strikes at that. There's more that I'm leaving out but essentially, it becomes really hard to correct things in such a structured method of working. You can possibly change the meaning of certain events and that might cause an inconsistency somewhere else. One of HxH's selling points is the almost lack of inconsistencies and its coherency.
One Piece is in a similar boat. The pages have become really cluttered with sound effects and dialogue compared to Skypeia but editors may find it really hard to say anything when the mangaka is Oda, who recently on a TV program was in the top 10 most talented people in Japan according to a poll conducted by a firm/TV Station. Oda however wants to hear their opinions so that a small offset but they're still not helping him de-clutter his pages.
Another thing is that recently, editors just sit back and let the artist do almost all the heavy-lifting. Its their job to help the mangaka come up with dialogue, plot points, make things easier to understand and more coherent, etc. Heroaca is the prime example of this. This arc had at least 3 abilities that were really muddled with bad explanations which made fully understanding what they can do really difficult. If Horikoshi has the ability fleshed out but is unable to properly explain it concisely, then the editor has to step in to make it more understandable and coherent. Monji didn't do that. He may be busy with other things as well but the story has to take top priority. I honestly think that editors need to be trained more rigorously so that they're able to fully bring out a mangaka's talent.
