honestly this nerf kind of makes me laugh honestly. yes i think its an overnerf to the leitis, they would have been better served with increasing its gold cost or something like that. as has been pointed out there are other unique units that see more use then the leitis does (plumes, ckn, kipchaks, arambai, and mangudai are all easy ones that come to mind).
but what makes this hilarious is that a lot of the people happy to see this unit nerfed are also the ones crying for more diversity in the meta today, and yet here they are, happy this unit which only really sees use in the imperial age, occasionally, is getting nerfed. this reduces diversity in the meta, forcing Lithuanians further into the Knight meta then they already are.