Riven is imbalanced, but not op nor weak.
Imbalance: _[im-bal-uh ns] _ noun 1. the state or condition of lacking balance, as in proportion or distribution.
Balance: [bal-uh ns] noun 1. a state of equilibrium or equipoise; equal distribution of weight, amount, etc.
The main problem of riven is that the "weight" or "amount" of her strength is not distributed equally.
If she gets ahead, her strenghts become incredibly useful.
If she falls behind, her weaknesses are more noticable than ever before, and can potentially lead to a worthless toplaner.
Ahead: Resourceless, Short cooldowns, Good base damage and ratios, Hard CC, Escapes, A potent shield
**Behind: **Short Range, Vulnerable to CC, Easy to itemize against, Only Flat damage, Not enough gold for core items
All of these things packed together into one champion result in that champion either stomping the guts out of everyone, or being completely useless.
The solution: Taking away the snowball power from riven, and giving her a bit more strenght if she falls behind, such as:
1: Reducing ratios/base damage and giving hp percentage damage to one of her skills.
1/b. Her ult has less base damage and ratios, but damages much more based on the missing health of the opponent. This way rivens would actually pay attention to the opponent's hp instead of just facerolling if they are ahead.
2: Making her benefit from defensive stats, while taking away some benefits from offensive stats.
2/a. Making her shield scale with maximum health or resistances instead of ad.
With these changes, riven would be pushed into a more bruiser-like state, but if this is what needs to be done in order for balance, then i hope it's not too big of a sacrifice.
Thank you for reading, if you agree, please upvote the thread so othes can see.