Emblem Unlock Requirements

In case no one has requested or pointed this out before, since it seems that some emblems can only be unlocked by either finishing specific commendations or reaching a certain spartan rank, it would be really helpful if the UI both in-game and on halowaypoint.com disclosed the unlock requirements. That way we can know whether we should just wait to unlock an emblem via REQ packs or if we should be trying to do a certain thing to unlock it.

If this applies to unlocks that aren’t emblems, (I don’t know if, for example, any armors work this way) the same should apply there.

Any thoughts?