My players and I thought it would be a great additional to add variable fields to the journal that we could utilize to call in macro's. These don't have to be specific to anything it could just be a set of like 25-50 variable fields V1-V25 or whatever that you could then add to a macro.
This would allow you to create macros and when leveling up a character you would only need to update the value in one place instead of in multiple places.
For instance say V1 is your base attack bonus. You might have 1-5 macro's for different weapons each one that includes your BAB. With this you would have the macro be /r 1d20+[V1] and then anytime you change your BAB in the journal your macro's would already be up to date.
This would basically be a step in the direction of allowing players to almost define a character sheet for their characters (or I guess NPC's also).