By the way, I like the idea of having some enclosed pieces of scenery like that.
I have all those same pieces from the walls kit GW was selling years ago, plus haven't done up the ones from the walled manor house kit yet. With the walls kit I cut some of them in half to get stones to go with stones, and wattle or wood to go with theirs, but them I use them as individual pieces to make whatever is needed at the time of their use.
Well I imagine I will use them alongside the Manor, but spaced apart so that there is a track between them for troops or wagons to move.
I may put animals in them grazing, or I might get something to 'drop in' to make it look like a crop is growing - who knows?
The scruffier ones - well the further away from the Manor the more ramshackle they get.
I too have some individual wall pieces that I can use for extra walls, but the trouble with them is they easily get knocked out of position which annoys me.
I have considered some sort of sticky tack to hold them in place more.
My ideal will be to have a small town or village covering my 4x4 table.
The Manor and then a variety of buildings along with fields and some woods, and maybe a stream - more in tune with a warband or skirmish game rather than the pitched battle.
I can get a 7' x 4' board across my Shen wall to wall, but I will have to crawl underneath to get to the other side - increasingly less appeal as my body ages.