Since its already happen Once mean it can happen again ! Therefore I hoping another redesign cause her shorthair can't match her Ponytail.
Honestly , I better prefer a time-skip where Serena appear with hair & outfit like this--
A normal & casual outfit with longer and groomed straight hair.
She did nearly look like this in --
All Serena has to do is' to change her Bang and wear a more realistic outfit.
For now , I want her hair to grow slightly longer.
Long enough to reach her shoulder.
Like this girl--
That way , it would be realistic.
May be , She can temporally leave the group to train with ''Battle Catherin'' and return with new look & Sassy personality.
If we believe that Mirror Ash can be stronger and Real Team Rocket can become Good guy someday then why can't Real Serena be more determinate and Sassy like Mirror Serena.
Seriously , Serena look really Cute when she glares !
After all ,
Even May started to act ''Sassy'' toward Ash from AG052 and she was even bigger crybaby then Serena.