I suspect the reason Reckless Experimenter is worded that way is due to the condition that the cards die at end of turn. It would feel a bit lengthy if it was all in one sentence, though, I suspect there is a way around that.

Mechwarper though, it definitely feels problematic at times and restricts future design space of mechs - oh wait Blizzard doesn't care that much about wild. I could get behind changing the card to be worded like Summoning Portal. Still would definitely have its use cases!