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Classic vector graphics look good to me.

The purpose to me (at least) is to give the player a sense of geography.

Will you have a version of the graphic with an open cooker / open cupboard?

If so, you should check out the "overlay" command (in the cookbook).

Ooh! Nice! I worked on graphics last night too! 

Looks great. Just be careful of perspective. For example, the handles on the right should face the other way, ] rather than [. The cupboards have no depth and look like they're painted on the wall. To fix that, the cupboard on the left should extend a few pixels to the left of the corner of the walls and the one on the right should extend a few pixels to the right of the corner.