Speaking as a current Bramble Watch Ranger-Player, who frequents this area really really really often...
Regarding the Bramble Woods South to Cordor Farmlands transition...
The spawn location for enemies is far enough away from the transition that if you are the 'first' person through (and low level) and the spawn script triggers, they are far enough away that you aren't "jumped" by low level goblins, and wild boar.
This isn't the case if a higher level PC passed by and didn't 'clean up' the gobbos, or high level who entered from the trade road and didn't exit into the farmlands... in that case, a low level lone PC could appear in the Southern Wood un-buffed and facing down 6+ enemies, including multiple gobbo-shamans who's WANDER script might take them over to the SHRUB, placing them RIGHT ON TOP of the entering lowbie. (Yikes!)
A much more terrible transition for lowbies is the Bramble Woods South into Bramble Woods North. -the spawn location for THIS area 'is' very much in a place that can cause lowbies to get "jumped" by hobgobs and worgs... but in that transition, you should already have had time to buff up.
Suggested 1:
Placing a potential Bramble Watch Ranger NPC "look out" might be great to spawn 'on entrance' of a character that is low enough level to potentially really be in trouble. The NPC could be on the ground with melee-weapon (Cuz Rangers do fight melee) -or- a an archer on that one hilltop that is inaccessible to PC's to the left when you enter -or a random chance of either/both.
Suggestion 2:
-if this is going to be the case, it would be great to have an NPC Bramble Ranger stationed on top of the lookout tower, much the same way there are NPC's on the lookout towers at the Eastern Outskirts (Don't recall the area name) -you know, the area that used to be the ruined farm that is turned into player-housing now? they shoot the wolverines and such that wander too close. -that makes sense to me to have a Ranger-NPC, seeing the historical role of the Rangers of the Bramble Woods...
Suggestion 3:
Northern Bramble Wood... Like the Wandering road-Knight, could randomly appear and sell you healing kits.
*Raise your hand if anyone's low-level character has ever literally been saved from death by an actual PC Ranger stepping out of the shadows in the Bramble Woods, and then sent you on your way with supplies to keep you alive while in those woods!!!
