Requested on webnovel
The parring can go anyway though I personally have a crush on Ezra and Mira
A twin(Sakura) or fem Natu she/they are still fire dragon slayers but Sakura or Natsu have extra magic requip for the hunter gear thought that would have to come after she makes the gear or monster summoning only applies after taming it. I don't really think anything needs to change until the s class challenge besides some hunting/rescue missions. She could already be a s class who was nominated to stay at the guild she also specializes in hunting the beast from Monster Hunter her exceed/happy could double as her Palico. During the tenrou island arc Sakura/Natsu was kicked out of the guild(for the first 2 years she was constantly looking for everyone so she wasn't there alot maybe this caused resentment from the older generation) so here she is wondering around with out a purpose and one of the Monster Hunter guild masters find her and trains her for another 3 years to be a guild master for a Fiora guild branch(no one but the hunters know she is the master everyone thinks she is just the top hunter) this will give her 2 years to get up and running before everyone comes back.