bit of a side-note; you can remove the black bar at the bottom of the screen in settings it's under Settings -> Others -> System Functions -> ''Display hints on the bottom in Controller Mode'' they added this feature back in 1.3
Sparkles skill gives an ally extra crit dmg % normally. And with e6 this effect is increased by extra 30% more crit dmg. Additionally if all allies have the cipher effect which they get from sparkles ult, u just need to use her skill on one ally and the whole team will get the crit boost which would be pretty good with 2 carries bcs both get buffed from one skill ( i actually just read it too so i hope i got this correct)
I think the first team (sparkle+bronya) was absolutely wasted. If you play jingliu slow than sparkle will advance her right after herself and before bronya. Cause now it was jinglius turn then sparkle advanced but did not get her before bronya. For that bronya needs to be a bit slower than sparkle and jingliu on attack boots. That way will the turns be: s-j-b-j. Now it was j-s-b-j