Honestly Marie Rose and Honoka seem to me just ordinary fighter archetypes from anime sources: how much schoolgirls or gothic lolitas there are in other games, especially 2D fighters? The introduction of them doesn't appear to me too much different from introducing the classic fighters that always happen, as the Bruce Lee or old kung fu master variations: the DoA series has always made use of the second ones and has always demonstrated high influences from the anime sources (even with certain old outfits). If something imo it's just the opposite with Honoka under this matter, to me she can appear repetitive because Itagaki had already introduced in DoA a classic Japanese schoolgirl in Kokoro "covering" her with the geisha background (and btw a character with an indirect tie with DOATEC just like Honoka too) that anyway contributed to make the character more "never heard before".
If the matter is not the kind of character but rather the appearence then sure, the design is important and just as
@Kodachi mentioned, from the recent artbook we know that in the beginning more original variations of the two characters were got in consideration compared to the definitive ones (overall with the final Honoka that gives the impression to exploit partially the success of the "Love Live!" main heroine); but in the end I believe that the point is overall the low use of the DLC potential that afflicts all the characters but that maybe is particularly decisive for these two and in particular for Marie. The gothic lolita fashion can be appreciated or less but I assure you that Marie Rose is an endless source for elaborated costumes, she could easily become one of the character with the most different and unique wardrobe in the roster and paradoxically one of the most recognizable too if the people behind the game would care for giving a major care under the DLC outfits (thought on the basis of the character rather than as part of a theme for everyone).
In my opinion the characters most out of place in the DoA series were Bankotsubo and Spartan, much more than the new DLC female additions: the first one because introducing a monster inhuman kind of character that has never got a second example (and in the original canon his story and presence appeared more as an out of blue parenthesis from the main plot, rather as a Ninja Gaiden pilot); the second one because introducing a full sci-fi theme with aliens and time/space jouneys that again has nothing to see with what we know of the DoA series. However both of them can be justified with the first one being anyway part of the Japanese folklore (and DoA is based on it considering that talk about shinobi) while the second one because in the end just a guest character. And of course with this I'm not saying that these weren't unique characters (especially the presence of a tengu in a fighting game) and even less that I don't like them (I hope to have demonstrated enough how much I love the DoA2 boss

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About the contests, this is unrelated from what it was said in the last posts but in general I would like to say it: with the three attempts done Team NINJA showned to use more opposite routes for trying to appeal everyone (contest hold on Facebook or on their site/ votes even from the fans or only from the team/ deciding to make all the high voted outfits DLC or deciding to make a selection even between them/ applying their own judgement for editing-switching the entries between the characters or remaining completely faithful to the fan designs), but like predictable everytime there are always complaints or not a decisive majority of consense because the fanbase has ideas and tastes too much far between them.
I think that everyone should take act that Team NINJA definitely tried concretely to use different ways for finding the satisfaction of the fanbase from time to time, so we should accept that they should get a route and go with it because the outcome is similar in every cases.
About the recent point on TN never mentioning something on the last contest, honestly the same happened even in the previous ones so I don't understand the surprise here. The outfits were sent, in that cases there was the additional part of immediately selecting the winners from the popularity vote (thing that here is not present), and then we saw them directly at the moment of the DLC release: if this time Team NINJA plans to make "winner outfit = most voted from them = DLC", then I expect to see them directly in October.
The revelations of the winners will be accompanied directly with the revelation of what outfits will become DLC: showing the first before would cut any news for the second one. I'm not saying that some more care to the contest event wouldn't be appreciated, but in the end I don't know what TN could do of really useful about this matter just now.
If something I dislike to not be able to see all the entries in a wall post, this on the opposite would make even more hype for the final revelations of the DLC (with people knowing the choices for each character outfit that they can expect). But I suppose that TN has surely some reasons for having got this decision, overall considering that they are continuing to use fan vote and visibile wall of entries for the photo contest.