Don't worry, I was being 100% facetious! After all, γ is generally believed to have been a hard /g/ in Ancient Greek, which is the version of Greek that "graphic" is based on and is CLEARLY the wrong way to say gif :D

Kinda sorta un-jerking (but not really) for a moment, I don't think that I'd include the rhotic in your hypothetical pronunciation in NASA and thus would say /neæ.sə/ over /neɚ.sə/. I also don't palatalize the U in SCUBA (/sku:.bə/, not /sk^(j)u:bə/), but I suspect that's just a dialectical difference.

Edit: I just saw your NZ lemmy instance name and now I understand the vowel choices. Cheers!