Lukas got back to me on the [Desperado/Datasucker + Sneakdoor vs Crisium Grid on HQ thing][1] today:
Rule Question:
If the corp has a Crisium Grid on HQ and the runner uses Sneakdoor Beta, then the end result is a successful run on HQ (i.e. you get to access a card from HQ), but Crisium Grid still shuts off something like putting a virus counter on Nerve Agent. This makes sense to me.My question is regarding what happens when you add cards like Datasucker and Desperado. From here - [Lucas] crisium grid | Android: Netrunner - it sounds like the ruling is that Crisium Grid stops Datasucker and Desperado from triggering in this situation. This confuses me.
The rules say that when multiple abilities trigger at the same time, you can choose what order to resolve them in. E.g. if the runner uses Sneakdoor Beta with Security Testing on Archives, they both trigger at the same time and then the runner gets to choose what order to resolve them in.
So in the case where I have Desperado and Datasucker and use Sneakdoor Beta when there is a Crisium Grid on HQ, shouldn’t I be able to choose to resolve the Sneakdoor Beta trigger last and thus still get the credit nd the virus counter despite the Crisium Grid?
One suggestion - it might help to add a rule that says that if multiple effects trigger at the same time, you must resolve the replacement effects before the non-replacement effects.
His answer:
Thanks for the question. The difference is that the replacement effects are actually constant abilities with a requirement that become active when the run is initiated. Therefore they resolve before the Datasucker/Desperado conditional abilities; the replacement effect is “faster”. I will make sure to add this to the next FAQ.
Hooray for the rules making sense 
[1]: Crisium Grid Rules Question - #8 by Crunchums