Please do the following 5 stage process:
Stage 1: As a creative idea generator, generate 20 diverse ideas for an  app for a new type of GPT-4 that increases productivity for writing  tasks. make the ideas very creative and aim at narrow, specific markets  and professions
Stage 2: Pick the best idea based on assumptions about the market and  its feasibility. justify it
Stage 3: As a product designer, describe the steps required to make the  product
Stage 4: As a marketer, develop a product name and pitch
Stage 5: Give me a vivid visual description of UX for the product