However, they already exist and are very well-made (especially the Kirin). It would be really worth adding them. In general, it would be good to create a separate version of NCF that includes all of Ashan's units that were not included in Heroes 5 (units from Heroes 6 and 7). Everything would be consistent with the lore and without any deviations.
Yes, Kirin are very interesting units, but they already exist. But there are no Lords - so, as an option, they can be added. Besides, this unit is a devoted follower of Shalassa, so everything is within the game's world.
Kirin are more like land-based artillery, while Lords are sea-based.