Hehe, Lightning - like it. Or perhaps Flash for short.
Although, I think Bitcoin is a good name for the first crypto currency. Somewhat explaining the link and transition from physical coins to the digital equivalent. May be a little bit easier for the less techy to grasp the concept.
Yes, perhaps your are right. Lightning was kind of my proposal for the new LSBTC (if it gets hardforked). Light Speed Bitcoin vs. Lightning. Be the judge!