I just think Momo and Kinemon are not good enough characters to allocate them that much screentime.
I do think Tashigi would have been a much more endearing choice as a temporary travel companion. In my headcanon, something bad happens to Smoker on PH because of Doflamingo. Tashigi decides to travel with the SH to take down the Warlord in DR . This time she emerges victorious from her opponent and save a Kingdom by her own strength which would have been a phenomenal character development for her.
To me, breathing room was necessary after Punk Hazard established that G-5 and the Straw Hats were getting close. But if we need an inciting incident to get Tashigi to team up with the crew, I think it could've been done during their trip to Vegapunk, or they receive some news about Wano weeks before the Raid, forcing her and whoever else to head there.
But beyond the logistics, yeah, her interactions with the various crew members would be fun. I'd still like for some Marines allies around her to help bounce off the crew better. The end of Punk Hazard with the Marines and Pirates partying is one of my favorite moments of the series, and an extension of something like that would make what's happening on Wano so much more compelling.
Imagine something like Tashigi scolding Usopp and telling him to get his act together, Franky leading the G-5 troops, or back-to-back banter between The Captain and Zoro while they take out a hoard of Gifters.