Excellent advice - slightly tailored for British/European grant systems but applicable for all of us.
Keep your proposal simple. Introducers with their pile of a dozen or more grants to present will, at the panel meeting, only be able to keep in the forefront of their mind one main thing about your proposal. Make that the deliverable (i.e. the answer to the burning question), and make it a cool one. That deliverable should appear right at the start of your proposal, and also at the end, with the middle simply there to explain it.