...Of getting material to appear in "real", onscreen Trek? Nope: canon material always scores 100% on that, by definition.You can substitute "Encyclopedia" with "canon Star Trek" and get pretty much the same track record.
OTOH, one can interchange the Encyclopedia and the "creativity" you deride, as both play the same role in making things appear onscreen. A certain low percentage of things made up for the Encyclopedia become canonical, just as a certain low percentage of things made up by the minds of assorted fans and employees eventually do. But only if they are liked, which remains the sole criterion for relevance or for ignoring.
Didn't Doug Drexler say on his blog that they wanted the NX-01 to look like the Daedalus, but he were told to base the design on the Akira instead?
That story seems to grow with each retelling... Drexler says TPTB wanted the Akira, yes (Drex Files June 13th 2009), but not in the same breath with saying that he would have preferred a Daedalus. Perhaps he said the Daedalus bit elsewhere, though?
Timo Saloniemi