I never want a full 'traditional' cover letter as they always tend to be stiff due to the format ("Dear Hiring Manager" and formality), but I'd like a few sente

I never want a full 'traditional' cover letter as they always tend to be stiff due to the format ("Dear Hiring Manager" and formality), but I'd like a few sentences with the resume submission that say why you are interested in the job, what caught your eye, and maybe a couple sentences on why you think you'd be a fit.