Well, since I played all the new characters for a pretty long time, I'm gonna give my short opinion on them.
Vergil - Turned out to be a lot less overpowered than I thought he's going to be. Sure, he's still very strong but the Concentration gain seems to be lower than in the preview videos and Judgment Cut End is not as powerful as it seemed. His moves are great both in terms of single target damage and area of effect. Distorted Dragon Breaker deals pretty hilarious damage (I hit the Savior for about 60% of his hp and it probably wasn't a perfect distortion either.). His only weakness seem to be enemies with shields such as Angelo Credo, Bianco Angelo and the Alto Angelo. Hitting their shield massively disrupts Vergil's concentration, which results in less damage dealt which you need to get through said shields. Overall, he's a ton of fun to play and seems not as overpowered as it first looked.
Lady - Probably the most broken out of the three. I managed to one shot Dante by just using Burst Attack. She's pretty fun to play with, but some of her moves feel not useful in practice. Like, how many times did you manage to fully charge Kalina Ann in combat? Multiple's also kind of hard to aim with. The Kalina Ann pull move would also be better if it pulled enemies to you instead of throwing them into the air. Concluding, she's a fun character, but I think she has a little too few moves.
Trish - Ridiculous area damage. I've had some trouble with actual bosses since I didn't find a way to deal a lot of damage except Lunar Phase JC Lunar Phase. She's super fun to play, especially on LDK.