To be based on the suit
1. Queen replicated the stuff wth his cyborg body
2. Sanji activated exoskeleton and all but not a special ability like stealth or something he could use without the fruit
3. Germa siblings said they are useless without the suits while being in candy.
4. Queen also mentioned onlz the exoskeleton, the super human body and emotions lose to Sanji.
So with this I am sure that without the suit the siblings can't use their special powers like lightning... And yes I think Oda rextonned it because we have seen Niji, and only Niji doing so without suit... But if you look closely he still had his Germa RS suit on him.
No other thing makes sense. Because of Judge would have planned to give Sanji invisibility through DNA and nothing more his suit makes no sense.
Still I hope Oda will someday clear it up himself
Bolded : You are wrong. All of them can use their lineage factor ability without raid suit.
If you remember pudding was able to shoot reiju the candy . Germa ability is like booster pack enhancing once ability thats why Queen was interested in it because Germa kids were gifted with hardening and durability.
We dont know yet why sanji can use those ability without raid suit yet thats why Queen was shocked. The original research Queen obtained from Judge was only lineage factor abilities .
Also Lunarian dna sanji unleashed could be related to his family . I think the ability comes from sora not Judge. The drug she took has sometging to do with it . We dont really know origins of sora , its possible Judge knows something we will have to wait and see .