Meh meh, I wasn't so much in to it this week. I don't really get why some people are surprised about Trebol and Sugar's strength. The looks of a character and their strength never had a direct connection with each other, so regardless of how they look, the fact that they work for Doflamingo it's expected for them to be powerful. I also never expected that the plan would go that easy. Considering the importance o KOing Sugar for their plan, I would have been surprised if there wouldn't have been some problems occurring.
As I was already expecting it, reading a chapter that was mainly about Sugar and Trebol using their powers, it didn't excite me as much as usual. Quite brutal though that the fairies lose their allies right in front of them, forget instantly that they existed and then attack them as they consider them enemies. Though that's a bit of a loophole as they knew about her ability and how it worked. Shouldn't they have considered the possibility that right in front of them they could lose an ally and forget them on that moment?
Same thing with Mr. Soldier, for some reason he isn't subjugated to Sugar, he still has his own will and I've found this 'contract' stuff she keeps talking about weird from the start. Why calling it a contract? That implies a mutual agreement that can be voided if what is stated in the contract is not followed.
You seem to lack imagination. Lol I kid I kid. But how about a clan that can embue its will on inanimate things or animate things to create sentient companions to help out. Imagine I shoot a fire ball, you take the ball and transform it into a teddy bear of fire that stands by your side, now your ally? Lol The whole thing can even go further.
But we are making a tagent on this lol. In truth, so far, I think Sugar has one of the strongest DF. She touches you and can then contorl you to do her bidding.
The problem is that way any kind of DF can become strong if just let your imagination run wild. A while ago someone was saying something similar about Barto's fruit. He considered an extreme OP ability just because he assumed it could even block Haki.
Every DF can be severely hyped if you start thinking about what it could potentially do, but if it is not actually done in the manga, well then I find it a bit redundant to talk about 'what if'.
Yes she could transform even something like fire into toy, however she might also not being able to do that at all. Oda continuously gives DF weird quirks and limits. For instance Shiki could only make dead objects float, not living ones. So it's not a far-fetched assumption Sugar's ability is the opposite as in that it can only transform living people into toys or that, even if she can transform dead objects, they can't move because they don't have a consciousness.
It's also not unusual for DF users to have certain limitations on what they can do with which limb. It's very well possible that she can only use the ability with her hands. So what happens if those are cut off? If it requires hand contact, then the ability suddenly becomes a bit less threatening than just needing any contact.
As Mr. Soldier doesn't seem to be under her control, it seems not to be a full-proof ability and that if they KO her, her ability stops working, makes it also appear less threatening (though it has actually yet to be proven if that would be the case).
Just like that you can hype an ability by imagining what it could do, you can severely limit by imagining what it limits would be. To me it just seems an ability that's very convenient in very specific cases, but overall has too much flaws. The fact that Doflamingo has one of his highest executives guard her 24/7 implies that just her alone would be too much of a risk. With other words the ability only works at its best when in conjunction with other people.
If Akainu touches you, who is magma, you're screwed too, and that the control doesn't seem to be full-proof, all things considered I don't find this DF on itself enough to consider it one of the strongest DF.