i'll shamelessly repost from old closed topic:
Why not making the KUVA lich system connected to KUVA? Make it that it's only in Kuva Fortress. Possibly with Larva spawning in Kuva Survival only. And add 3rd option for defeated Lich - Syphon Kuva - to make it a way of farming kuva outside of normal Kuva missions. This would possibly solve 3 things - newbies starting Lich without knowing the difficulty, lack of players doing the Lich nodes (as all would do it on Kuva Fortress) and a reason to do Lich other then weapon. At top of that it would make sense that the Kuva Lich would be there and have an high level greneer army. Lore wise that would make much more sense.