8) Some designers believe glass is best at 60 degree angle slant but this precludes easy, aesthetic and inexpensive shading for summer cooling strategies while not appreciably increasing winter gains. It can also stress and break the glass seals if not properly supported.

9) Too often extremely long overhangs are incorporated and in most cases they shade expensive glass during the winter when maximum aperture should be exposed.

10) West glass may be great for a view but can be the main reason for requiring mechanical air conditioning due to afternoon heat gains. West-facing overhangs can be expensive and/or largely ineffective.

11) Think "replicability" and resale value. Passive homes that look "unconventional,"  ungainly or ugly are not what people want to replicate.  To beat climate change and energy security issues that face us, more conventional designs will win converts and probably have a likelihood for higher resale.

12) Architects should not use their clients as a "learning experience" without their consent and shouldl provide them with a heatloss analysis and accredited type of solar gain analysis such as a Solar Load Ratio (SLR) or other peer reviwed method.