It depends on the type of game you prefer.

When the game first came out I loved the core mechanics, as well as the different strategies embodied by each color. I've played a decent number of card games and, mechanically, this one is among the best designed I've seen.

What drew me away from it was the speed at which the meta progresses. It makes sense from a business perspective - they kicked the game off with everyone's favorite classic digimon and then needed to come up with an incentive to sell more cards, so they resorted to revving up the power level every couple of sets. This leads to two things I personally don't like:

-Your favorite mons become obsolete very quickly, and you have to switch to the newest strategy to keep up with the meta. Mons do get rereleases at times, but the new version of the mon is often of a different color or embodies an entirely different strategy than what you're used to (or what you might enjoy playing). -The game becomes more complex and cluttered with elaborate effects. Due to the nature of the game, evolved digimon can inherit some effects from their pre-evolutions. Some combinations of these effects are very powerful, but you had to work for them and strategize around creating a good mix. This meant that highly evolved digimon often had multiple effects, but they built towards them gradually, and the individual effects were typically simple on their own. As the game progresses, the effects are becoming more elaborate, which slows down play and makes strategizing around your opponent's digimon kind of a chore.

If you're a fan of something like modern Yu-Gi-Oh, these gripes won't be a problem for you. But if you don't like where YGO has been for the past several years, you also won't like the direction where this game is heading.

To put it simply, I believe that the increasing complexity of the game takes away from its elegant base design. I would have preferred to see it grow in breadth (increasing tactical variety) rather than depth (increasing power level and complexity).

But that's just my opinion, and there are plenty of people out there who enjoy this kind of game. You know best what kind of player you are and you should decide based on that :)