Looking good, in regards to the base theres a couple of things you could try:
- Blood trail leading to a mutilated corpse; this will make it look like the site of a grizzy battle
- A wee communication node thing; this will make it look like a 'rear line' outpost
- A 'mysterious canister' or other equally elaborate objective marker. That would make it a nice centre piece if you decide to take up gaming.
Alternatively instead of glueing them onto the base you could model them separately and just set them/magnetise them to make it more versatile
'If you fail to prepare then you'd better prepare to fail'