New home page template with narrower banner image

[catherinehunt]

Expected behaviour

Would be very useful to have a new home page template with a much narrower banner image. Like the one that's available for WordPress: http://blogs.unimelb.edu.au/kronzucker-lab/

Actual behaviour

The current home page template has a banner image that takes up a lot of the screen, and doesn't work well for an information-based site where there isn't just one main call to action.