Former Wales centre Tom Shanklin says he would bring in fly-half Dan Edwards to start for the Nations Championship match against New Zealand in Cardiff next Saturday.
Sam Costelow started the 28-21 victory against Japan, with Edwards coming off the replacements bench in the second half.
Shanklin told Scrum V the fly-half position is the one starting change he would make against the All Blacks.
"I'd go with Dan Edwards at 10," said Shanklin.
"There were a couple of opportunities in the Japan game I thought where Sam Costelow ended up kicking the ball away.
"I think [Edwards] will be better for Wales' attack against New Zealand because you are going to need more ball movement.
"I think Dan is a better option at that and getting the backline going. He is probably more of a threat ball in hand as well and offers a bit more in attack."
Continuity is key for Wales
Former Wales scrum-half Richie Rees and ex-wing Shane Williams believe Wales should provide some selection continuity.
"What I wouldn't do now is go chopping and changing over the next couple of weeks," said Rees.
"So I would keep Sam at 10."
Williams added: "If you said now that Sam has had his go, now we're going with Dan, he [Costelow] is going to lose all that confidence he's gained from the good things he did yesterday [against Japan].
"We can't then say come back now against Australia and dominate again because I don't care who you are, it affects your confidence.
"So I would not make any changes. They've got the job done with the bonus point win and I don't think anyone played poorly, although there is a lot to work on."
Rees also believes Wales must start showing more faith in the scrum-half resources after Tomos Williams again played 80 minutes against Japan with Reuben Morgan-Williams unused on the replacements bench.
Head coach Steve Tandy has relied heavily on the Saracens scrum-half.
"The difficulty we've got is there's huge trust in Tomos because he is one of the best players on the field," said Rees.
"We also have to start blooding someone else behind Tomos and giving them that opportunity. If not against Japan at home, then when?
"Reuben has been playing well over the last two years and we also have Che Hope in the squad."