Help with a design app by answering a couple questions?

I would love it if everyone could answer a couple market research questions for a project I am working on. Your input will be extremely valuable.

Thank you for your time.

1. If you have used any computer (or mobile device) programs for design, what is your biggest complaint about the tool? What did you like most?
2. In what way would you like a computer program help you with gardening or garden design?