People have mentioned that recon is a tad strong for their taste, though it does suffer from attacking cities. We also have this thread here, where we're trying to make walls useful and worth building.
Wouldn't it make sense, that a walled city would be much more difficult for a recon class unit to attack? After all, a unit of rangers isn't expected to build seige towers, battering rams, take walls, and the like.
Perhaps then, walls should increase the penalty that recon units suffer when attacking it (say to -70 or -80%)?
do you ever have problems with being swarmed by recon units?