Is there any reason why Kindred's ultimate has a really long cooldown?
It affects both teams even if you use it doesn't mean that you won the fight, yet it has a 3-minute cd on lvl 1 and 2-minute on lvl 3. Comparing this to kayle ultimate which only affects teammates positively there is no negative effect on it, and also does damage: on lvl 1 160 sec on lvl 3 80 sec.
Maybe a lower cooldown would make the ult better. there are just too many damaging ultimates on much lower cooldowns that makes Kindred ultimate pretty bad since you can't really counter any of it because of the long cd.