This is by request for @gunframe
My GG Layout for DS4 is as follows:
Punch > Square, Kick > Ex, Slash > Triangle, Heavyslash > Circle
Dust > R1, Roman Cancel (P+K+S) > R2
Blitzshield/Parry (S+H) > L1
Record/Playback > L3/R3 sticks.
Instant Kill Shortcut is R2+Circle
For Baiken Parries, press the corresponding counter "immediately after letting go" of L1, you might have to buffer 236236 for her Parry overdrive beforehand. The timing is during the "ting" noise.
A >Square, B > Ex, C > Triangle, Drive > Circle
Throw > R1, Rapid Cancel > R2 (can be used for Barrier too)
Exceed/Burst/Overdrive > L1 (hold the button for Exceeds to come out right away for combos)
L2 > Taunt, Record/Playback > L3/R3 Sticks
I use a double-tap method for Carl/Arakune inputs, though inputs for Nu-13 and Lambda get tricky with this Layout, I "thumb slide" from D to C for alternative summons.
My other inputs are here:
http://gear-project.tumblr.com/post/147754366124/well-this-is-a-technical-question-about-the-game