Hi Andrew,
Thanks for your feedback. We are always improving those aspects. Recently we increase the limit size for the orthomosaic, DSM, and Index to 50 GB. You could get more information about this topic in the following link.
Please could you let us know for which outputs you would like to increase the limit and what is the expected value for you?
In any case, we will pass your comment to the product team, even though we cannot guarantee that a solution will be implemented, I can assure you that every piece of feedback is internally evaluated at Pix4D.
Have a very nice day.
Best regards