Headscratchers / Chibi-Robo!

• Why would Mr. Sanderson have plans for upgrading the Chibi-Blaster ten years before Chibi-Robo even existed?
  • The blaster may have been a separate thing from Chibi-Robo, then they were combined, but he kept the plans.
• What happened to the infinite energy gift after the first game? It's shown at the end that Giga Robo gave the power to many different Chibi Robos, but it is never brought up or used again in any other game in the series, even the direct sequel.