Use participation as a source of ideas. Avoid trivial changes. Save your energy for important changes. Lay the groundwork for change carefully. Be careful of status.
Every office has status symbols that are zealously sought and jealously guarded.
Don't let a change build one employee's status at the expense of another's. Don't overdo it. Don't unsettle your people by springing a batch of changes, one after the other. Try to space them out or weld them all into one big reorganization. Allow plenty of time.