Edit: Just finished a game on your map and I realy enjoyed it but even when the fields look realistic DrunkinGambit was right, it feels a bit empty. Maybe you could just make the fields a bit smaller and add more fieldroads/ditches or hedgerows. In that case you could forget about adding objects to the fields itself.
Im currently looking into that. I will release an update later on which includes sector rework, adds some heights and addresses the trench.
Afterwards I will see what im able to do with the fields. Decreasing their size is not an option because they are there to flank. Roads, hedgerows and ditches will probably be added to make them more appealing to look at