Plan contender

This is the plan we like best as of today. It has some problems, but some great features. There are upper cabinets only on two facing walls, so no upper corners at all. One pantry cabinet is removed to make the walls right and left of the window more symmetrical. The "bump" in the backsplash is repeated between the range and the sink. The range is moved right of its current location by 6" to center it on that wall, just as the windows look centered opposite. Both bottom corners are left blind, and the counter over the radiator is raised to windowsill height, and kept at the same depth as the pantry cabinets (18-19"). Here's what it looks like entering the room:

A 1910s kitchen would have had a couple pieces of big furniture - not cabinets everywhere. This plan tries to achieve that through limited use of upper cabinets, and maybe seems more spacious as a result. It also "simulates" a stand-alone hearth by making the range more of a focal point instead of just another built-in piece. That's how it looks to me, anyway.

It's not perfect. There's limited prep space near the range, and the sink isn't on the same counter as the range. The longest continuous countertop isn't near anything (except maybe the microwave). But, swapping the sink and the range (which would improve prep space) would mean putting back one wall of upper cabinets, messing up the look. The places that must have upper cabinets are the sink and the fridge, and having them across from one another looks best (in the computer program, anyway).