I think so too when it comes to his DF.
I think Oda already knows what happens when you go bonkers with DFs(Ope Ope no mi) and how plot can be questioned for such .
Doubt he will commit the same mistake.
Oda after seeing the fans put Law over Zoro in popularity poll... he immediately started holding him back LMAO...
Oda feared that the fans would end up turning on Luffy... and would want Law to become pirate king instead...
Specially since Oda basically gave everything to this character:
1- Hax DF
2- He was edgy lord (some people love that side)
3- Serious and can do plans (even though I think he sucks at planning LOL, but fans just always appreciate that side of him)
4- He gave him a good backstory
5- He is a D.
6- Uses a sword (which is a weapon that most fans like)
Point is... as Law was progressing from Punk Hazard against Vergo/ THEN into confronting Fuji/Doffy/ into more and more
So many fans started to look down on Luffy... and they started to want Law and Kidd to be ahead of Luffy in competition for PK... and although this will increase the intensity of Luffy's race to PK position... Oda realized that SOOO MANY of those fans actually would end up rooting for those character and wouldn't want Luffy to win the throne... it's the same with Blackbeard as some people occasionally want BB to win the throne before Luffy takes him down...
But with Law... he's a D. and he is a GOOD GUY... so for Oda... he feared the consequence of doing all those plots for him... resulted in Law being even AHEAD OF ZORO in popularity poll at one point...
This is ZORO we are talking about
Oda realized that if this trend would continue... it would end up with so many fans backing up Law or Kidd over Luffy
So... I think that Law ever since that popularity poll.. took a HUUUUGE DIVE... Oda held him back... and Luffy set it clear against Doffy to be hugely above with Gear 4th
then he didn't include Law in next arc (WCI).. to allow Luffy to EVEN GROW FURTHUR.. and now in Wano.. after his training... he EVEN reached MORE HEIGHTS...
to a point Law is not even a contender in most fans books...
Kidd on the other hand.. although Oda had big plans for him... I think his past with Law and his fear from it... is affecting his writing regarding Kidd... and I do not think Oda will flesh him out SOOO GOOD to a point of being a real trouble for Luffy in future... I don't believe that... I feel he will just stick with BB and currently Yonko to be the obstacle for the throne...
And fans support Luffy over Yonko and BB when it comes to PK position anyway... but when it comes to Law and Kidd as rivals.. if they were given the chance... Oda realized that many fans would TURN ON LUFFY.. he now avoids that...
I personally think he killed Ace because of that... because Ace was more cool... awesome fruit... SON OF ROGER... D..... Big brother.... like what else do you want is with Ace... Oda removed him completely from equation... and made the other brother as Rev member and not pirate LOL....
Oda's plan is always make SH center of attention and remove competition that would make fans root for anyone else than SHs