Rise of the Remorhaz Society

[Suicide Junkie]

There are certainly lots that do at least one of those, and both are covered by various mods.

#1) There are plenty of ways to do this one:

GritEcon makes fighters the item of choice for defending against missiles.
They also provide some anti-ship capability with no supply drain on the host ship. (Where most ship weapons drain supply quite fast)

#2)
GritEcon makes mines weak, and forces a thinner deployment, but removes sweepers.
They are less of a wall to break down, and more of an area-effect delay tactic.

(Building a wall involves pumping out a screen full of satellites (mini-bases, which need to be repaired) instead )