I know there are certain players who prefer the more open maps, but I feel that too many of the new maps are too open, and I hope the trend doesn't continue. There is a reason that Argus Desert Gate was the most popular dow2 map by a factor of 1 billion, and it is because it was a large (but narrow, narrow is the key) map that concentrated the action into "lanes".
There are a few reasons I dislike the big open maps.
1. It encourages non-confrontational gameplay: I get that some people feel it offers more tactical flanking opportunities, but I disagree. Generally, I find it leads to what I call "ring-around-the-rosie" gameplay, in which people try to avoid / disengage from fights, and just backcap points where your enemy is not.
2. The distance between allies on the map becomes too great.: Just say two of our players are bot, and two of theirs are top, and our top flank is collapsing. Going to assist your ally is almost always the wrong move, because it can take almost a minute to get there, during which time, we lost a shield gen and a turret. Instead, it is better to simply push the side you're on, resulting in lame base races.
3. They STRONGLY encourage backdoors and cheesy gameplay.: Cheese strats on the smaller maps are certainly possible, but are harder to pull off. On the big maps, I am constantly seeing landspeeders sneaking into the base, SM backdoors, and Eldar webways in "dead spaces" on the map, where no one ever goes. I suppose these are legitimate strategies to some, but they are easy to pull off, hard to counter, and seem like a good way to get players to quit in frustration.
I am not saying that there shouldn't be any open maps, but currently, I would like to see a few more in the vein of tantalus station and solarion's gate
Also, why are there no small 2v2 maps? Every single 2v2 map is huge, whereas at least 3v3 gives some narrow options.