Let's discuss SG Taliyah.

She fits the leader role (pink) pretty well. She belongs on a new good team.

Let's be honest here about the direction of Taliyah overall if you are not aware.

1. Sadly she is severely "underplayed". 126th place.
2. Riot cannot risk to even put her in the spotlight because she is a extremely frustrating cheese pick now.
3. Her gaming director (which got fired last year for directly insulting players) made really controversial plans set for her in the past which got scrapped and I have suspicions they cannot even make a lore direction or identity as of now.

She is quite literally a can of worms.

Either Pink, or Blue.

So far Blue's central theme is that there is no central theme.

Seriously, Poppy, Ezreal, Xayah. Shortank, Bishonen, Edgy. Where's the theme there? Am I missing something?

For Pink, she could be a naive leader even younger than Lux, and work well with Lux, like in normal canon lore with them both being new to their magic.

For Blue, she could be anything really.