The Jedi Starfighter proves that Lucas designed the movie BEFORE he finished the script.

(AOTC)
“Oh hey Doug Chiang, paint an edgy starfighter for the Jedi that resembles an OT Stardestroyer.”

[Months later]
“Oh damn, i need an R2 droid for Ewan so that he can deliver some explanatory dialogue on his way to Kamino … Doug, put the R2 droid somewhere … here. Looks good to me.”

(ROTS)
“Hey Doug, this time paint an edgy starfighter for the Jedi that resembles the illegitimate child of a Tie-Fighter and a Stardestroyer. And hey, i need R2 to eject somehow on General Grievous’ ship. Come up with a lazy solution that will look good to me.”

[Months later]
“Oh damn, how are Anakin & Obi-Wan supposed to pilot these things properly when those extended wings block their view left and right? Pffh, i don’t care … looks good to me.”