While I'll agree there could definitely be more roaming enemies (especially more Legion troops and tougher, more dangerous ones). There are plenty of places to go and kill things.
I GUARANTEE you will max out level before you clear every location.
i agree, but the game does need some tweaking, this can easily be fixed with a dlc, a lot of people notice the lack of combat also, so i sure hope they breathe a little more life into the base game at some point before its too late, maybe have a few more CL, NCR and raider patrols here and there, especially along the highways, most of the map is fine, i know every spot can't have enemies, but a little more sense of danger in some areas i think would be pretty cool, especially as we level up, maybe after level 20 or something.