[democrite]

It's possible night shift is enough, particularly with iOS 10 coming and I think the ability to adjust it from Control Center. It's possible an in-app adjustment would also likely conflict, for instance if one set it in Marvin, went to another app and changed Night Shift, and then back to Marvin. So it seems best left out, unless iOS provides the ability to adjust night shift, which may not be the case, and could even be frowned upon or rejected.

As for this or that feature, calling something a flaw doesn't really help. Kris is not dumb and is quite aware of what he wants to bring back. M3 is a complete rewrite, and if you unzip the app, you'll see I believe it's written in a new language. He had to learn a new language, even if it's simpler than Obj-C, and possibly the use of new and different libraries. Consider the time between the last M2 and M3; Kris eventually had to decide between what is good enough for an initial release, and how long users were waiting, particularly since he may not have wanted to continue with M2 fixes and switched completely to 3.0. Does Kris have a so called responsibility to be completely open with this process? No.

Consider the history of any complex design, a building, a car, a cockpit engine; if nothing was ever taken out, re-designed, or decided that it shouldn't be in there, what would we have? M3 was and is the chance to reconsider every detail and every element. Good design will take as long as needed, rather than just adding everything back in at once. M3 is many aspects already leaps above M2. As for specific features like gestures, Kris is very possibly deciding among all possible uses of them, if they might conflict with something else, if they should be used, and what for. For example, pinch could be used for font size, but is it a good idea? I don't know. That, as well as any other detail, should undergo long consideration. What I hope for is that Kris continues the re-design so that perhaps eventually, everything without exception is beautiful and pleasurable to use, that everything takes from the very best of iOS design, and perhaps somethings are eventually so great that others, and who knows, maybe even Apple, copy from him. If M3 becomes the premier app that shows what can be done with a reader, that shows it to everyone and everyone that makes eReaders, then perhaps it can be called perfect.