What doesn't make sense from my standpoint is this. Some of you guys are opposed to having to use the OR operator in your condition.
However, you also find that the condition "if any of these goblins swinging swords at friends comes within range of me" a perfectly plausible condition. I do too -- it sounds reasonable for a soldier to do that in a fight.
But in pure boolean speak, "any of these goblins" amounts to "Goblin 1 OR Goblin 2 OR Goblin 3 OR Goblin 4..."
So my argument would be that to a limited extent, compound triggers must be acceptable unless you take an extremely stringent approach to ready action conditions. I am also opposed to overly complicated conditions. The only logical solution is that the DM has to make fair and reasonable decisions regarding what can be a condition and what can't. Sub-optimal, but it looks like WOTC doesn't have explicit guidelines for this (else they probably would have been cited already).
The precise issue that came up in my game and triggered me to start this thread was the following: "If somebody tries to heal this downed enemy next to me, or if my leader dies, I attack him."
What do you think?