Feels somewhat too short for a serious development. It offers something new compared to the series, but there's no much combat for the main heroes, mostly slaying by 2 armies of digimon.
And omg AncientGREYMON and AncientGARURUMON... Frontier scriptwriters were digging too much into the first digimon season.
I still recommend it for at least 1 watch, you might like it.