Are you saying this is something the computer adds on it's own?  If so that's an interesting idea but might be hard to pull off.  These are expensive structures and having them all over the place wouldn't make sense.  How would you determine where they were built.  And what happens when you borders expand?

If you are just saying we can build them in our territory than similar ideas have been discussed.  I don't remember ever seeing the developers thoughts on it though.  Would definitely like to see an ability to build overland structures for defense or scouting.

Simply allow Watch Towers (+3 LOS) to be built around any captured remote Resource to add some minor defensive bonuses if attacked.

If you really want to keep that Ice Shard, then build and place some real troops on that Tile in its defense.

Probably a tad late in the Dev cycle for all that, but it seems quite doable to allow at least Watch Towers.   

Yeah this has been brought up quite a bit so you are not alone.  I like your ideas, even the preventing of spawning of monsters part which some others were against.  If the radius is pretty small then it makes sense.  A creature probably wouldn't create a liar or nest right next to your tower.  There's nothing to stop them from entering the terrirtory later but that would probably only be from aggressive monsters.  Probably not normal animals though.  Regardless it would make the game more interesting to have other structures in the world that could be used to protect choke points or offer warning on vunerable fronts.  I hope this is something Stardock is considering.

My remark about monster spawning was based on "Normal" monsters

It could actually attract some other nasties as dragons when you store gold there  or when its near a gem mine.

But  my most interest would be fog of war remove and garrison, and maybe a country border so you can see what your lands are.

Also it would be nice to be able to build signs

So you can place a sign somewhere with a place name or   remark.

Or statue's like in Lord of the rings. Things that do not do anything but give atmosphere..

Good suggestion. I've made it before and I'm sure others have. I do like the idea of building more than just cities within your borders. You could call it a keep and it would give you enhanced 'sight', healing, and defensive bonuses.

Over time it might even develop an inn or a merchant to take the gildars from the troops...wherever soldiers are there are people willing to take their money through whatever means usually entertainment. This could eventually even develop into a village lets say after fifty turns after building the keep or so there is a random chance that a village will start.

I'd also like to a see, eventually, a robust fort/castle system. Something that can start off as a small fort protecting a resource, but end up being a citadel (with enough tech research and construction)... and maybe being able to convert it to a city later on, if the player chooses to. Maybe even allow Hadrian Wall type forts and walls to fortify land. I messed with this pictures just to see how this could look.

I posted about forts earlier, watchtowers and walls would be nice if doable. Should there be a pioneerish guy called engineer that you unlock from military tree, who can build military buildings on any square in your turf?

Well fort and tower spamming can be easely be prevented by making it costly. After all forts normally make no money except border forts where there is trade..

Also you can make them small at first so you have to invest to get them bigger. So you can have a lot of small watchtowers. But citadels would be very expensive to maintain..

And maybe simple watchtowers could be made of wood.. Cheap and burnable..