Yeah, I think they outright stated that they just wanted a jungling marksman, cause they saw few cases like that at the time. Since you've mentioned Kalista I gotta give something to Kindred... They achieve exactly what Kalista does (jumping around while shooting you down) in a slightly more healthy, less ridiculous way. Seriously Kalistas passive should've never been put in the game.
But back on track I think Kindreds Q is second ability that deserves to be kept in some form. IMO what they could do is just decreasing it's damage, but make it mark enemies hit and then require her to recast it shooting out an arrow in a straight line that consumes these marks (if one of marked enemies gets hit by this arrow all three marks get consumed dealing bonus damage, unless marked enemies are far apart enough that only the one hit gets bonus dmg). That's how I would handle this ability without changing it completely, but when it comes to her passive, W and E the changes here would probably be more drastic.