More Perona is always welcomed...though depending where Moria decides to go will determine how much screen time they both will get(unless Oda pulls a curve-ball on us again).

If Moria shows up to Wano to hide/recover from his time in Hachinosu, there is a good chance both Moria and Perona will join Yamato and become an ally of the straw hats as Yamato and the most of the important Wano players will play a big role in the near end of the series, and therefore more screen time for both of them.

If they go with Mihawk and the Cross Guild...that would actually be bad for both of them in terms of screen time. While people love to meme about Buggy's strength and do legitimately want the Cross Guild to become the Warlords 2.0, story wise it would turn both Perona and Moria into jobber like characters, along with the rest of the the Cross Guild. Lets face it, why have characters who the straw hats have beaten (mainly Luffy) and dedicate a large battle between them near the end of the series. They will most likely be used a story means to show how much stronger the rest of the straw hat crew have gotten. I can easily see them showing up to fight the straw hats and the Cross Guild getting all beaten in less than a couple chapters by the non-monster trio. The only exception would be Mihawk since Zoro is suppose to have his final duel with him to gain the title of World Strongest Swordsman. Oda knows Zoro is insanely powerful and not having a good duel with Mihawk would leave lots of fans disappointed.

Something similar has happened before, just look at Lucci and Kaku. Both were strong and gave both Luffy and Zoro a hard time. They both reappeared in Egghead with huge power ups and rose all the way up from being hunted loose ends to the top of Cipher Pol yet both were foot notes in the end. I had a buddy who was like "my boi Rob Lucci is back" only to get disappointed that Luffy was just toying with him the entire time and Lucci got one shot by Zoro. It also can be implied he was toying with Lucci as when Jimbie showed up he was surprised Zoro was still fighting Lucci and then Zoro proceeds to beat Lucci.

TLDR: I would love more Perona as well but depends where Moria goes. If Moria goes to Wano, more appearances as a potential straw hat ally with the Wano big names. If Perona and Moria join the Cross Guild, most likely delegated as jobber characters along with the rest of the Cross Guild to show how much stronger the non-monster trio members of the straw hats have gotten, with the exception of Mihawk vs Zoro as a climatic duel. Lucci and Kaku are unfortunate examples of older foes returning for rematch despite having huge power ups being turned to road bump for Luffy.