might be a good time to give hecarim some more changes
to Q and W, as annoying as I think his E is I guess it's fine. i don't think the ult buff will make him 'strong' again, nor do I think it really addresses some of his glaring design flaws
but he tends to be volatile to balance when his Q gets tinkered with; since it's just a spammy PbAoE without any condition to it, he tends to get a little crazy whenever riot's lowered the mana cost on it. if it's too high though then he has trouble clearing the jungle and quickly drops to irrelevance.
his W has some skill expression in using it at the right time to max out your healing but overall it's a very underwhelming ability in general and its strongest use-case usually requires having coordination with your team which can be difficult in soloQ.
i'm not saying either spell needs to be rebuilt or replaced but adding some additional condition or unreliability to his Q to 'unlock' its highest damage might be just what he needs to put him in a spot where he can be strong without being overbearing, like he's been so many times between season 5 and the start of season 7.