Posted some of these ideas in different threads and wanted to post a collection of my thoughts.

My Opinions are as follows:

Make mudras 1 button abilities;
Ten > Fuma
Chi > Raiton
Jin > Katon
Delete > Hyoton (or repurpose it suggestions below, as of now its not used)

When kassatsu is used;
Fuma > Hyosho Ranryu
Katon > Goka Mekkyaku

2 button mudra abilities (button combos are just randomly used as examples);
Ten – Chi > Doton
Jin – Chi > Suiton
Chi – Jin > Huton (30 second refresh/application, for when huton drops for reasons)

Ten – Jin > Hyoton potency of 200 (Maybe a repurpose idea) triggers Meisui? Instead of suiton doing trick and meisui

3 button mudras;
Huton > does full 70 second duration as normal
Hyoton (maybe another idea for repurpose) > adds 80 ninki to gauge with 110s CD (intended to use for downtime/transitions)

Dream within a dream now procs Duality
Duality works like previously but can also crit/DH.
Trick attack procs Assasinate with 600 potency 120 sec CD


Please feel free to tear this apart.