Hi DrRich,
There are some good and inexpensive alternatives in the foundation thread here. I would particularly consider the mattresses.net and the SleepEz choices that are listed under the “KD foundation” section of the post, both of which use wooden slats that are less than 3" apart and would be perfectly suitable and can be shipped UPS.
No … we were quite happy with the look of the sides of the Reverie (which is white) but my other half does like to use a bedskirt which hangs to the floor to reduce dust under the bed and this also covers the side of the adjustable bed and you also don’t see the legs. A bedskirt can be chosen to “match” the mattress but since the mattress is covered almost all the time with sheets and bedding anyway this wasn’t an issue for us.
Phoenix