I think you’ve raised a key point, @yaoyaozijinng, and it suggests a much more workable – and effective – solution…
When we use keyboards on iPads (I certainly do), what’s actually missing is just key accelerators – control etc. combinations that access the features we’d like.
And this shouldl be possible for Keith et al to provide, without too much trouble. They’ve even got a roadmap for it in the desktop app, as just using the same keystrokes would be a very good idea, making things straightforward as they can be when going between iPad and laptop.
There’s a hidden thought for that last clause. Scrivener keystrokes are exceedingly many, and quite often not ‘linguistic’; you can’t think of them from words naming the effect.
So the iPad version would need another easily transported ability, a single key that gets you to a keystrokes search, where you can find an ability until it becomes natural to you.
A thing we always need to keep well in view is that Scrivener is far from a large company. And the second thing, priority first, is to be aware how much Keith is the core of it, and the creative mind that’s brought so much in it over the years, the iPad app rather formidably.