I'm not sure about that, because this game is actually the second one and has more or less the exact same pros and cons as the first one.Maybe this will end up like a "Seed of the Dead" type thing where the next game is a huge step up from the former. They just need to refine things a bit and make the game at least 6-8 hours long (but not just packed with filler obviously).
Basically the game is finished, only the ENG/Steam version has been released recently, otherwise the Dlsite/JP version has been out for some time.