Sorry for the late reply, been pretty busy as of late... But the game is great already beat the main story! Overall I enjoyed it more than Cyber Sleuth, but it did feel much easier, some of the bosses were not as ridiculously OP *cough Sleiphmon cough*, the story is much more enjoyable cause we only have the one character. I know many people are upset about the lack of a female protagonist, but I can understand why they didn't make one. They story is much more enjoyable and more defined relationships between the player and the other characters, along with actually showing how the protagonist grows and matures through the story.
The Digimon added gives us more variety and they fix a number of things, such as Alphamon. In CS1 Alphamon is in a half evolved form where her wing like things are up and she uses the Oryuken Blade, but now they have Alphamon with the wings down and using her sword Grade Alpha instead, along with making Oryuken Mode a DNA Digivolution of her and Ouryumon like it should be. Some attacks have been changed such as Character Reversal, where now it has a Accuracy of 70%.
I find this game to be a definite improvement over the first game where they're listening to the fans as to what they want. They've added customization is a great variety of shirts to choose from (even if you don't get the bada** Beelzemon one from the Pre-Order), they completely revamped the PvP system (which I haven't been able to try too much due to the lack of players). I will say I do not the like the fact that to get accessories for Digimon is locked behind PvP, where you need to do online matches and complete certain requirements to obtain special currency to buy the accessories.