Allow more characters in the Improvements Module - Category Fields

I am creating action lists for working groups but the Category title and sub Category titles only allow 50 characters - it is very hard to describe actions in 50 characters and makes this very limited. I would like to use the improvements module for a lot of our action lists but this character limit has put a real spanner in the works. I have attached a screenshot of what my sub categories would look like (if allowed)