@Maki707:
Oda is keeping doflamingo's power as well as most of mihawk's abilities a secret as they are going to appear later in the story and does'nt want to ruin thier fighting moves and styles before thier respective big fights.
By reading OP you will notice that Oda loves to foreshadow and try to make the reader guess what is going on before he reveals the secret, he does it all the time
Yes, I understand that, which is why my last line was "He doesn't have to revealed everything that the ability capable of doing, he could at least confirmed to us what the ability is.". Thing is, we all pretty much guessed his ability is a string related. He has shown us too many hints about his ability and yet, Oda still doesn't want to confirmed what his ability is. Akainu for example, already showed and confirmed us what his ability is and back then the only hints we get from Oda to theorized about Akainu power is "Red Dog". I remember back then someone theorized Dofla ability has something to do with spider (the webs) and that was dropped after seeing one of the Vice Admiral have spider like creatures on his back and then a puppeteer but it was dropped after Dofla cuts Oars Jr leg. Now every clue Oda lead us with string related and knowing Oda's style, he usually lead us to something but later give us something totally unexpected. That's what I think, and hoping he is doing with Doflamingo. It's not worth to keep it as secret to the readers if when the big fights with Luffy begins and Dofla goes "That's right, I'm a String String user! Fufufufu!". Everyone will be like "Meh, didn't we already know this like 100-200 chapters ago?".
If he do that because he doesn't want to ruin Luffy vs Dofla in the future, what about the other "future fights" we're probably going to see in the future? Like for example The Supernova? Luffy already witnessed Kid and Law ability with his own eyes, will that ruin their fight in the future? And as I previously said, it's not like Oda have to reveal everything what Dofla can do with his ability. Just confirmed it as string, since that's the safest choice he has given all the hints he's been building up up until now and we will learned more about it in the future. We still don't know what Marco and Joz can do with their DF. Same goes to WB and Akainu since Crocodile show us what DF user can do if they trained their DF (he can suck moisture with his right hand). I hope Oda will confirmed and revealed Dofla ability in this war. If he still keep it as a mystery, then he must be planning some twist with Dofla and his actual ability.