I'd be fine with a 6x6 office. I could tolerate a 6x6 cubicle. An open plan office would be a dealbreaker for me. But if the cost of office space is an issue,

I'd be fine with a 6x6 office. I could tolerate a 6x6 cubicle. An open plan office would be a dealbreaker for me. But if the cost of office space is an issue, much more efficient than an open plan office would be just letting people work from home.