#4. Ruby Riott (Ruby Soho) would be a guaranteed IMPACT Knockouts Champion
Ruby Riott has changed her name to Ruby Soho and she was definitely one of the top guesses for either of the 'mystery woman' spots that IMPACT had at Slammiversary, but she did show up on the night.
She could absolutely still debut for IMPACT though, and she absolutely should! Soho is a certified star in whatever women's division she ends up in, but her whole aesthetic would really work with IMPACT and she would definitely be one of their top female stars.
#3. IMPACT does great things with characters and Lana is a great character
IMPACT Wrestling managed to get relative wrestling novice Allie completely over with the IMPACT faithful to the point where she eventually became IMPACT Knockouts Champion.
They could absolutely do the same thing with Lana, especially as her worth ethic and desire to succeed as a wrestler will see her continue to improve in the ring as she goes!
#2. and #1. Marina Shafir and Jessamyn Duke should continue their wrestling journeys at IMPACT
I'll wager that not many people have Marina Shafir and Jessamyn Duke on their lists to show up at AEW, IMPACT or Ring of Honor, but the pair as a tag team have a lot of potential.
We've seen former martial arts star Taynara Conti go from strength to strength after leaving WWE and heading to AEW. I believe that Shafir and Duke could do the same as a tag-team somewhere else.
With their MMA background, they carry an air of legitimacy and an element that other female tag-teams simply don't have. They'd be a great addition to IMPACT Wrestling.