People are speculating they'll do it next week since it's irl Walpurgis on 30th and 1st and the 30th is Philips birthday. They may have held it from the update notice as a surprise or it will be live the following week.
So no 00 ID? An ego mechanic would be interesting, the most apt way for it is having the character reach -45 SP and then win a coin flip.
I imagine it being as simple as do X to gain Y. In Library of Ruina Gebura's EGO needed her to constantly deal damage or become staggered. In this case it could be have X amount of sinking on self (Because Phillip) or maybe even have X amount of burn on self or the enemies. It's interesting how right after we have Vergilius manifesting his EGO in game we now have an EGO manifesting ID.
The issue I can see with this is that EGOs become too slow for the game, unless you have multiple waves before the boss then by the time you get to the EGO you already damaged and debuffed the boss enough to be a non-issue.
That's if you use the intended amount of sinners and turns. If you go solo or duo sinners then it can be more of a snowball effect since a lot of the ID kits are self reliant (Pequod Heathcliff is a good example). This all depends on how good the EGO awakening effect and skills are.
Plus we already have IDs that change sprites based on conditions. Like the R-corp or W-corp IDs based on the amount of charge they have.
Solo or duo sinners always looked too clunky to me. It boils down to surviving the first three rounds (usually by good evasion rolls or manipulating sanity to avoid stagger) and then nuking the enemy with insane damage multipliers.
If Don or other main characters get an Ego it will be interesting if it will function as an extension of the base ID.
I'm really interested to see what they do with Sanson and Don's Canto in general. He's good intentioned but the consequences of his actions are significant to story so I'm hoping they actually do something similar with him. You can also get at least two good fights with both Mirrors and White Moon, and he could work well as the end boss of her Canto too.
It's fine, back in Ruina I used the cheese strat to beat Pluto because he kept bugging out in phase 2 and I was sick of it. They're Project Moon games, at some point you gotta embrace the jank. Take the 300 Lunacy. Do not look behind the curtain.
Burn teams will definitely be significantly more powerful with this unit. It's interesting how it has more than one trigger for the awakening of the EGO, being at +45 SP or losing two teammates as @wtfNeedSignUp speculated.