Defenses are too slow to buy
Each and every time we buy defenses (such as minefields or barbed wire), we need to open the shop and click it and then click to place it.
That's 3 clicks per defense, even cheap stuff that's easy to mass-produce and which we must often replace because unlike watchtowers and higher (the damage-inflictors), those 2 are utterly destroyed and can not be repaired.
I would like it if you could make defenses (or at least the 2 cheap barrier kinds) operate like supply drops, where when you click 1, you can just keep clicking on the screen and buying them so long as you are clicking on a suitable place.
In the case of supplies, that's clicking on a drop zone. In the case of mines/barbwire, that would be empty spots on the field that a player has already captured.
Doing this would make the game much less tedious. Players could rapidly spend money and put up a wall of defense, and replace defenses.
In particular, Nordurland is very frustrating. Because of the Crimson Bulldozers which are air-dropped behind our lines, our defenses around important land (the cities) are vulnerable to them.
The only defense I can see is to prevent the air drops by mass-mining every single tile we have captured. But this is very tedious. I'm spending like 10 minutes mining the 3 southern maps I've completely cleared to prevent this.
In the past I might've just left units behind my lines to defend against this, but this isn't possible since we are limited to 4/4/4 units (well you can get extra infantry if you rescue them) so I have to have most of my guys at the front.
Please make it easier to place mines and barbwire quickly by 1 per click instead of needing to go to the shop screen and select it for each and every one. I don't think you really lose anything here, it keeps the game fun and players are probably more likely to use this stuff if it has more incentives.