well both yes and no... The search for a good layout is a big part of the game, but it is really annoying when someone takes you'r layout too.
If you had a button called 'show layout' it would be possible to show the layout for fields without camps/bases too.
An alternative could be that the marker you place change colour if the layout is different from when you put the marker there.
BUT the layout markers could then not count as an alliance marker as they do today, but keep the alli markers to 12 no matter how many layoutmarkers there are.