Not aware of a requirement to test the x-feed valve(s) prior to the EEP. It might be in your ETOPS manual supplement and therefore it becomes a de-facto requirement.
Some 737's utilizing a Boeing APU maint. program are exempt from the APU requirement prior or during the designated ETOPS portion of the flight. The start is usually done at the end of the ETOPS leg when cold soaked.
Pretty sure the requirement for two LRNs has not been changed even in the 787 avionics package. Had they failed already I would be thinking there must be a problem here. I believe the ICAO MNPS manual covers this issue regardless of operator/aircraft.
Lastly it's not a "suitable alternate" anymore but rather a ETOPS alternate in the most recent pubs.