Aldrak wrote:
How short can the recommendation essays be? One of my recommenders is having hard time reaching 250 words, especially in the second question. Could it be as low as 100 or 150 words?
I think it's ok to be short, but personally, I would try to pack the recommendations so they each convey maximum supporting evidence for your themes and personality strengths.
Use the second question, about constructive feedback, as extra space for your recommender to talk about strengths well. For example, here's constructive feedback I gave, here was the candidate's reaction, and here's how I've really seen him/her take that feedback and grow to do X, Y, and Z since then.