I took a look at that script you mentioned. I'm not familiar with the language, but I've reformatted it in an informal pseudo-code style for the sake of trying to clarify the structure and understand it (although I haven't been able to get indentation working):

(script static void ee_activate

sleep_until (crystals 00-04 destroyed or b_ex_p1_has_started) 1800
sleep_until (crystals 05-09 destroyed or b_ex_p1_has_started) 1800
sleep_until (crystals 10-14 destroyed or b_ex_p1_has_started) 1800
sleep_until (crystals 15-19 destroyed or b_ex_p1_has_started) 1800
sleep_until (crystals 20-24 destroyed or b_ex_p1_has_started) 1800
sleep_until (crystals 25-29 destroyed or b_ex_p1_has_started) 1800
sleep_until (crystals 30-34 destroyed or b_ex_p1_has_started) 1800

if (not b_ex_p1_has_started) set b_ee_unlocked true
)

I'm curious about some of this, and about how it relates to your current 'boiled down' recipe for success. So perhaps I can just fire off a few questions, and maybe you could give them a shot?

What's the name of this language?

What units is the 1800 in?

I'm not entirely sure what the sleep_until command does, and how the script executes. Maybe you can say a little about the workings?

b_ex_p1_has_started is quite a cryptic variable name. Do you know what the b_ex_p1 bit stands for?

You talk about waiting 7 minutes (to be safe, I assume), but where is that reflected in the script? Or if it isn't, where could the relevant time delay be coming from?

Has someone checked that Legendary genuinely seems to be needed? Sorry if I've overlooked something in the thread about that, but it's quite a long thread so I thought I'd just ask it.