Is rewarding planning though if they are commonly available? Cause then you don't really have to think about it, you'll just have cover wherever you send your squad
I think cons should be the only mainline with sandbags, and I like the changes storm suggested to limit their use
Assuming you can manage to put down the cover in the first place, sure, yes.
It's either this or sandbags and green cover get a hefty durability buff, since all the natural green cover is gone in the first 10-15 minutes of the game and engineers have a billion other things to do besides put down sandbags that are going to vanish in 10 or so seconds of combat. Maybe mortars would have more of a reason to exist too, to drive enemy infantry out of cover that doesn't just vanish with a single tank shell or a quick infantry skirmish.
As it is, the idea of a mainline sandbag nerf is really just more Ostheer main sobbing by proxy and I don't know why this forum still kowtows to it after the last few updates. Removing sandbags from volksgrens in particular, and this bleed-focused Sturmpio rework, are enough to open a can full of OKW balance worms, and I don't see the actual controversy over actually being able to have your troops dig in without dragging one of two squads from across the map, especially when, as I've already said, the cover itself vanishes faster and faster as the game goes by, and engineers have more and more to do.
I really have no idea why this forum cries about a-move blobs so much when it seems every other proposed update is meant to nerf some counter to blobbing or another.