Wow could you be any more wrong if you tried?

Skill Speed is generally trash I agree. Spell Speed is not. It's pretty much *the* stat to max out on BLM because BLM effectively has unlimited MP, and their damage output is directly tied to how fast they can burn their MP and swap between Astral Fire & Umbral Ice. Oh and skill speed only affects weaponskills, not auto-attacks so right there it loses ground to accuracy, det and crit.

I don't buy the argument of DET being better than Crit either. Not only does Crit generally come in higher values/cap higher, but its impact on your damage is far more significant - I currently have 512 crit on my DRG (iLv78 and I'm still missing several key pieces. I've also got 468 Accuracy and I'm pretty sure I'll be able to hit the magic 480 with the build I want to use) and ever since I broke past the 500 mark I've noticed a significant increase. I don't have a parser to record specific test data which is unfortunate, but just going from my own personal experiences I'd estimate my crit rate to be around the 30% mark give or take 5%. Those damage spikes really add up, particularly with all my cooldowns active. DET is definitely a worthwile stat as it makes your average damage much better in increases your max damage output, but I still prefer crit for 2 reasons:

1) I can potentially get much more out of my abilities with it than I would with DET (higher risk but much higher returns) including on my auto attacks which regularly crit for around 250 damage.

2) Critical hits contribute to the Limit Break gauge, and that helps out everyone.