I've noticed a lack of the potential use of blockades in cities, mainly to stop vehicles.
For example, let's say I build a firebase as MEC at the Red Point in the map:

Most people might put an AA on a nearby roof, and a Tow in the streets, and perhaps some HMG's, and some wires to block entrances, looking something like:

There would be a lack of wire and blockades, giving vehicles freedom to role around the TOW without getting in danger. Now when I build firebases, I decide to use my blockades (hey, I have ten of them!). My FOB would start to look more like this (with green being wires):

This would inherently cause the enemy vehicles to move to not hit the wire (or causing APC's to start shooting them, leaving them open for a HAT) (Dark Blue dotted line; red dot if in POV of TOW):

As you can see, unless if they destroy the blockade, the vehicle would run into a direct line of sight of the TOW, or would have to go around towards construction and head south that way. All that can be done with about 9 blockades, assuming one per road. Some can be moved to other positions, such as the ones on the East facing north to south, allowing more efficient placement. A system like this will effectively disallow the US APC's to assist their team effectively, if your team is semi-coordinated.
This also allows more conservative placement of the TOW to protect the gunner. Placing him within a compound looking out on a road, which an APC must use due to the blockades, gives the gunner much greater protection from an enemy infantry squad.
Now don't get me wrong. This completely gives the firebase location away (as in, a single firebase without anything will obviously be harder to detect), but if your going to be fighting there (as opposed to spawning, which of course a secondary firebase would be useful for), use all your resources to help you win.





