Looks like the NM needed to get the glavoid shells is a difficult Tier3 Abyssian pop mob. Don't know the details yet. I'm just speculating that because I read that a different Empyrian Weapon required 50x items from such a mob, so I assume the same will be true for Twashtar. Really hoping that the mob drops quite a few of these per kill..
Sham, I know it may be a shot in the dark but I have a gut feeling that these weapons will be the new relics that we have always been asking for.
The complaints about the dynamis relic and ToAU mythic weapons have always been that they require not just a huge amount of effort but also tons of gil.
Since, SE has said that these will be augmented on future updates and right now they are the highest dot/dmg weapons from the Trial of the Magians, I have a feeling that they will be the new best weapons.
However, I do not think they will top dynamis relic. I can see them beating, in dot/dmg, the mythic weapons as they already do. Most likely they won't have the bonus a la mythic.
When you look at it, they do take effort. However they don't take a huge linkshell or tons of gil.
I think their choice of making it 50 glavoid shells was because it would take people 3-6 months to complete it (of course hardcore players will do in way less time). That 3-6 month time period would be right around the time the new update would be rolling in and the weapon getting another improvement.
There are another 2 reason why SE isn't releasing any new weapons that will take forever to complete and they are FFXI is getting old and FFXIV is right around the corner. They know a lot of people love FFXI but they are no longer willing to spend a humongous time going after anything new in this game.
Don't forget, a lot of us started the game in our teens. Now we are adults and have to devote most of our time to RL.