Well, the Eldest Race is very Vorlon-inspired, yes. And the Arcadia is one of those "Go ahead, just try it" kinds of ships (but it is in the original too!). The Chessmen have the ship now, but they don't know all the things it can do. Only Lipumira does, and... well, consider the abilities we've seen so far of the older races. Do you think she's told them everything? Or that she's even ABLE to?

Depending on what happens after Books of Souls, we may explore that.

--
Geoff Depew - Mephron
"Big O! Showtime!"