Is an army of all corvettes with missiles viable?

When I'm doing an offensive playthrough, I prefer almost all corvettes. I will make several fleets made of only corvettes. These are great for launching attacks for several reasons. They are cheap to make, and quick to replace and have by far the fastest sublight movement speed. They can be split, resplit and merged to suit your needs. This is especially useful when invading and using armageddon bombardment. Bombardment damage is based on fleet size, and a 100 size corvette fleet is cheaper than a 100 size fleet made of bigger ships. Anything more than 100 fleet size does not add damage to planetary bombardment.

I use 1 or 2 fleets of heavy ships (mostly cruisers and battleships with titans) to support my corvette fleets during large skirmishes. Move the corvettes in first (to use as fodder) then move your big expensive fleet in behind to offer support fire (or carrier support, or both?).

/r/Stellaris Thread