I finished this last Friday. I really enjoyed it! It wasn't without a few issues - units getting stuck, some dodgy pathfinding - but it wasn't very prevalent. I got a lot of playtime out of it - was 19 missions long - for it's price.
It melded elements from the cinematic universe very nicely, without feeling objectively bad like some of those cinematic entries.
A skirmish mode, or map maker, would be nice. But it was such a small complaint. If you like the films, I think this is worth a play.