Board Thread:Game Discussion/@comment-149.254.120.140-20130626094926/@comment-11321899-20130628121433

I like Masa's idea of having a "Spark" type o upgrade to increase stats. Older cards become obsolete  due to the power creep that happens after every event. In the end this is a card collection game and everyone has their favorite characters and I actually think there will be more retention of players if they were able to slowly increase their favorite character cards so they can stay relevant. Maybe several type of sparks that can fuse into teh cards to increase various stats like an ATK Spark, Life Spark, or DEF Spark.

These sparks can be awarded or won in events but NOT PURCHASED, and be uncommon so players of all types can partake in upgrading their favorite characters. Again, the key is player retention. People are less likely to quit if they have built up their favorite characters over months of time. One of the reasons why people are so addicting to MMORPG's is because they have spent a huge amount of time on their Avatar.

Events can spawn new base cards to keep the decks fresh but these cards do not have to continuously be more power existing cards.