As I see it, the cap is pretty useless. It might prevent you from maybe getting 10 tpe in a season. That's not all that much. I can see two options on how to improve on that.

1. Remove the cap and scale down the available tpe a bit. This prevents tpe inflation that a lot of people seem to be worried about and does away with the complexity the cap adds for players and updaters. This would basically create a cap without calling it so and without having to keep track of a certain type of tpe.
   
2. Keep the cap as it is, but increase the amount of capped tpe available to get. This would allow getting tpe through other tasks than writing or graphics. Increase the variety of tasks that give out tpe, so people can do the tasks, they like the most.