The latest arc,The Lost Agent Arc
Rukia :
-She is the one who was in Ichigo's heart when he activated his fullbring.
-She is one of the biggest reason why Ichigo wants to have his powers back.
-And most importantly,she is the one whom Isshin and the others,chose to stab Ichigo,and bring his shinigami powers back.
Inoe :
There is nothing much in the story as of now,I haven't seen yet what role could she have in this new arc.Saying that showing her new ability is emphasizing her importance in the story,is truly ridiculous in my own POV,sorry for being frank.It's normal to show their progress in the story,in fact,it wouldn't only be her who's going to be stronger,surely............everyone will get stronger.It didn't even have much emphasis,just so you know.
NOTE: She can maybe get stronger in the future,but always keep in mind that........EVERYONE DOES..........as the story progress.
For more elaboration for those who are being persistent.
Some may argue that Inoe became the MC of the story after the SS arc,and it made her as the new heroine of BLEACH?.........*head shaking*..........Being the new MC doesn't mean that she would also be the new female protagonist,there's a difference between that.The protagonist is the heroine of the Overall Storyline,whereas the MC could be the protagonist as well,but not necessarily means,that he/she would always be the MC.The MC is just the focus of a partial story.....