it’s called balance tuning, Tatars don’t need much to be a solid civ, and that certainly doesn’t include a third unique tech, and Tatars actually have solid Unique techs. furthermore, all your change would do is make it so that CA could only be used by Tatars - the easiest way to buff CA is to reduce their Frame Delay, this helps all the civs who can effectively rely on the Cav Archer, which frankly, they all could use, with the exception of maybe Huns, but even they aren’t being stand out stellar atm.
i have provided all sorts of input, just because i’m not a fan of radical changes to the design of the game doesn’t mean i am anti change, i have an entire thread full of balance proposals that i posted a few weeks ago.