i did some quick math but someone please correct me if i'm wrong here.

so, if you spend 1000 artifacts, that's 1 raid ticket. but if you convert 1000 artifacts to essentia, you can buy 2 tickets with that. so it's better to convert to essentia to buy raid tickets
with loyalty, you can spend 2000 to buy 1 raid ticket, or 10000 to buy 5. if you convert to essentia, you get 100 essentia with 10000 loyalty. which is approximately 3 raid tickets (they would cost 105 essentia). so loyalty seems like the better option. if you calculate it for 180 tickets, that's 360,000 loyalty. but if you wanted 6300 essentia to buy the same 180 tickets, then you would need to convert 630,000 loyalty? is that right? seems way high like I made a mistake somewhere.
either way 6300 essentia seems incredibly overpriced for a raid considering what you can buy for that amount, as opposed to likely getting like random t6c in a raid. especially for lower level alliances that won't place high enough to get a meaningful amount of radiance.