My opinions on what Garen could be changed to.

I've been meaning to get thoughts out cause garen has always felt like he's still a work in progress on getting those final polishes he needs, but I'll keep it short:

First and foremost his passive needs to be absolutely changed, from a lore standpoint, I will say I absolutely forgot if it is apart of his lore. However from the design of juggernauts, they don't normally want a fully dedicated ability to reward them outside of combat for punking out would they? I do have concerns about how it would be approached. I feel his W could be his new passive or a more intensive and farther explored villain thingy, but W->P is better since it'll be easier to transition with some tweaks imo at least.

Now the real thing that'll probably get me yelled at(I do welcome it though since I can alter the idea based on feedback), combine Q+E to work like sejuani's old W. Garen enhances his next AA to silence the target and deal bonus damage, if garen takes too long or reactives the skill he will automatically spin(spin portion will still be cancellable for a reduced CD like how it currently is)

Yes yes, I know damage numbers would get retuned accordingly HOWEVER, I do believe 2 new skills would more than make up for it which could push garen further into his lore.

I am adamant about his passive deserving change as a priority even if my other changes are refuted, but suggestions for what his passive could be would be cool. As for garen's Q change being "non unique" since old sejuani had it, I don't think that's even deserving to be a concern since his entire play pattern is old sejuani's W anyways but with an execute.... Not to mention while uniqueness is nice, I don't think denying something which already opens up 2 extra slots instead of 1 just for the sake of not bringing back an old skill(even though it was reworked out of the game) is a good idea when those 2 free skill slots could pretty much grant the "uniqueness" wanted.

Either way I just personally care that P is reworked as a solo priority, Q+E combined into one skill, maybe W->P, and creation of 2/1 new skills is just a side hope but if experimented with could make garen truly in the place he deserves.