Tried Izayoi for a while in training mode. I find some of the timing required for her combo's to be too strict.
How is combo difficulty in Guilty Gear? It seems that combo's in general are shorter there than in Blazblue.
It's harder than BB's depending on the characters, but a lot of players make them harder than they should be.
GG has more character/weight specific combos which has to be altered the further you go down the reps.
But that isn't too much of a problem if you know about how move properties work, which is why I stress that people should learn the ins and outs of their normals before going to combo transcripts (i.e. if you know j.HS helps juggle them higher instead of lower, etc). FRCs aren't too difficult. They're no different than links. People just have problems because their timing screws up if they did their previous gatling/cancel earlier or later.
Also I guess GG doesn't have that button hold input buffer that BB does. But BB doesn't have negative edging for specials that GG does.