[FreedomCalls]

This is possibly true for the Space Station, especially after it morphed from the original Freedom design to "Ralpha" (Russia + Alpha) and moved from 28 deg to 51.5 deg to suit Russia, but not shuttle.

A 28 degree orbit would have left it unserviceable by Soyuz and Progress launched from Baikonur. It would have burned up on re-entry many years ago like Skylab and Mir during those long periods when the Shuttle was grounded for one reason or another and couldn't resupply it or boost it to a higher orbit. I don't think that's what you want is it?

[Rockitz]

If the launch rate for shuttle had been reasonable and station was reboosted each time shuttle docked, 28 degrees would have worked. There was also to have been a permanent propulsion segment (I worked on a proposal) for reboost purposes, but that was shelved. Either of those options would have provided the reboost necessary. Given the funding environment, the 51.5 degree option was necessary, but not optimal. No NASA commitment and some weak contract performance killed station.