This is very good stuff!
PvE must become PGI's priority from now on.
PvE is very important for both
new (so they can learn the game before being stomped by more experienced players),
old (who want a break from the repetitive PvP system) and
casual players (who want to play a quick or easier match without deep commitment in time or attention). Not to mention PvE can be the salvation of CW.
Now let's hope PGI will continue to develop this feature. The "survive wave after wave of enemy mechs" mode is very promising. I believe that, if well implemented, PvE will be the main "game mode" for a lot of people (specially if there is a co-op support for it).
PS: Sometime ago I posted
this wishlist. I see PGI is much closer to make the dreams come true than I expected.