Back to the original question, the pros and cons of the Evening Divine Liturgy...
I think the jury is still out on this one. Like everything in North American, it depends upon one's jurisdictional tradition.
For instance, for ROCOR Orthodox, this is completely wrong (at least from the point of view of my ROCOR friends). They will go to vigil (or vespers) the night before a feast and, if possible, attend the Liturgy the next morning. Normally, these Liturgies are populated either by the retired or by the zealous (aka converts).
Now, for my Antiochian friends, until these Evening Divine Liturgy books came out, they rarely celebrated weekday feast days 10, 20, 30, or 40 years ago. These Evening Divine Liturgies, basically, reintroduced many feast days back into the Antiochian practice.
Many consider the Evening Divine Liturgy a terrible innovation. Alternatives that are offered are as follows:
1) Forget them all together (unless it is Easter, Christmas, Dormition or Theophany).
2) Move the service to the closest Sunday. (This sometimes occurs in some jurisdictions, but for the most part is frowned upon)
2) Keep the "normal" tradition which is either Vespers the night before and Orthros and Liturgy the next day or Vigil the night before and the Liturgy the next morning.
3) Celebrate only the Liturgy the night before and begin with either the hours or Great Doxology
4) Celebrate Orthros and Liturgy the night before.
I don't know which one is the best, but I guess as long as "something" is done, it is better than nothing.