Note that I do not recognize every character in this game yet so the list is gonna be incomplete because I don't have names. I'll get pictures as the day progresses.

Current Album of the units supplied by /u/Changster23: http://imgur.com/a/d7WQT

I'm sure this info is already known by this point but the current best leader skill is "Extreme ATK up for color". With that in mind, the best units to reroll for at 5* are:

TECH:

• Kenshiro

• Hiei

• Gintoki

FORCE:

• Son Goku

• Yusuke Urameshi

• Taro

SPEED:

• Hinata

• Chitoge

• Seiya

BODY:

• Hiroshi & PyoHo

• Gon

KNOWLEDGE:

• Yamcha

• Dark Schneider

HEART:

• Ushio Hinomaru

• Fuusuke

If anyone knows the names of the "???" units let me know. I'll fill in pictures and also the other decent LS's as the day goes on, but I wanted to get the best LS out of the way early.