Reading Litchi combos is complicated even to dedicated Guilty Gear players like myself.
5B 2C itsuuA 6Kote Haku Hatsu riichiA ippatsuA ippatsuB 2D ... becomes..
B > c.C > HCF+D~A > RDP+D > QCF+A > QCF+B > HCB+A , A , B, c.D
That is my attempt at one combo, it took about 3 minutes to translate that, because I don't know Litchi combos, and had to reference the attack names. The issue people have with traditional SF notation is that it's extremely limited in explaning some of the more advanced inputs you have to put. Using numbers is just the fastest way to write out a 30 hit combo.