Concept designs are always like this.  It is the only way to reach innovation.  Every idea, no matter how stupid it sounds, has to be given a chance.
I would be extremely surprised if it ends up looking even remotlely like any of those.  That's if it ever even gets released.  Are we sure this isn't gamepark under a different name?  There seems to be too many similarities, it just seems to give me that impression.
If you pop over to ZodiacGamer, there is a bunch of official concepts for the Zodiac, and they are even worse than this bunch.  But in the end, the Zodiac ended up making a very good choice, and turned it into a very nice looking machine.