Eh, I more consider that a style choice? Which is 100% arguable as to whether it works for someone or not, but ultimately all the ghost abilities are arbitrary, mainly it's reasonable to expect they fit a general theme. This one does work in that regard, Asura has a lot of "remote use of something else to fight with" modes, so taking that to the limit at the end where his core isn't even in the body anymore feels like a reasonable progression. The style part comes down to how those abilities are revealed: does the author lay them all out ahead of time to the reader, or leave us to discover it as a surprise during the course of a fight, at least for the first time? An again in total seriousness, can argue that either way. I think it's fair to say though that the majority of series do go with "you don't find out everything that someone can do until a fight where they need everything they can do". Which is realistic? I mean, look IRL, history is full of wars where one side or another debuted a new weapon that they worked hard to keep under wraps beforehand.I think what he means is when asura was shown dead but "oh wait! flash back time!" and he's fine because the author gave him a new ability.
And then the whole "to deceive your enemies you must first deceive your allies" or something to that effect. So the first time it doesn't strike me as a deus ex machina. In this case we did see them getting briefed but then weren't told what it was is all.Sun Tzu said:All warfare is based on deception. Hence, when we are able to attack, we must seem unable; when using our forces, we must appear inactive; when we are near, we must make the enemy believe we are far away; when far away, we must make him believe we are near.
To me the bigger test will be (yes I'm aware RAWs are way ahead but haven't been reading them) once we're fully through all the "introductions": does the author keep inventing new stuff each time, or does the author find creative ways to make use of what is shown and surprise readers even when we know all the moves on the table? If existing powers just are constantly becoming "obsolete" that does get lame and isn't how stuff works, but I'm not going to hit any author too hard for this style of initial reveal.