I was a main nin in ARR/Heavensward and a bit in Stormblood but with each expansion it was getting worse and worse. What nin is currently lacking is personal dmg up buff, all other melee jobs have such tool: Reaper-death design, Monk-greased light/stance, Samurai-cant remember skill name but both dmg up and weaponskill recast faster skills, DRG-tether/blood4blood/disembowel.

In ARR/Heavensward nin had "poison dagger" in form of viper/wasp poisons that increased personal dmg and give separete skills stun (viper) and silence (wasp) skills unlocked. Devs killed the skill becouse it was increasing mudra skill dmg too but by looking on how complex and punishing nin work is, you need to remember skill rotation along with mudra rotation in between those, no 1press skill execution like ALL others class have (besides dnc dances) they should give that skill back. Trick Attack from nin in current 5% form compared to 10% is underpowered compared to other jobs with dmg up buffs (reaper/monk) or crip up (drg litany), and since those jobs are easier to use its better to bring those other easier jobs that do more dmg compared to nins dmg-pilled up work

They should seriously give up the bunny already in mudras and in its place give at least a fuma shukiren if we mess it up, its lower dmg than raiton but at least its not 0dmg skill. But by looking on how other classes work they should rework nin from scratch, get rid of mudra system and input 1button skills with a split chakra/ninki system. We use weaponskills and gather chakra, chakra is used on skills like Raiton/katon/doton/sution in single or aoe form. Using chakra skills would incrase ninki bar and from that we can use it on brava/frog/clones. Kinda like reaper system is working. Not only it would be easier but it would also provide constant dmg without penalty of high latency or muscle mudra error.