On the one hand, I can see certain marketing cleverness in turning a (short) synopsis into a (very long) title. It's a way of ensuring that people who even just glance at the cover of your LN are likely to know its synopsis. Basically, its a way of getting the core "starting point" idea of your LN out there without someone having to actually pick it up and find it elsewhere (presumably on the back cover, or on the first page).
On the other hand, let's face it - These names are very long and cumbersome, and that does have some potential downsides. And while we foreign anime fans tend to have an easy time shortening these names to something actually usable for quick references, I have to wonder if it's so easy for the Japanese.
I mean, one of these titles in Japanese
in romaji are basically just a series of random syllables to us, so shortening it down to a few key syllables is child's play. But in Japanese, "Ore no Imouto" might be nonsensical or overly generic like "She my sister" or something like that. In other words, "Ore no Imouto" might read and sound fine to
us, but I wonder if it works that well in Japan itself.
While I applaud Xion Valkyrie's creativity and cleverness in using this title approach for several popular anime titles with shorter names, I can also say that for those that I'm familiar with, I greatly prefer the
actual title of the show (the possible exception being "One Piece"; in this case, laying out the synopsis of the show sounds
way cooler than "One Piece", imo).
As for the quality of an anime based on one of these long "Synopsis Titles" - I wouldn't assume anything about the quality of the show in a general sense, but it does make me think "romcom" because the shows with these sorts of titles tend to be "romcoms" in my experience. Of course, the Synopsis Title itself will tend to gives its genre away anyway.
