Another few suggestions for aspects of their heritage they could highlight:
Watchtower, September 15, 1895: "Beware of "organization." It is wholly unnecessary. The Bible rules will be the only rules you will need. Do not seek to bind others' consciences, and do not permit others to bind yours."
Watchtower, March 1, 1919: ""According to this Scripture the very most that the church could do would be that, after having vainly endeavored to get the brother to repent and reform, it should withdraw special brotherly fellowship from him until such time as he would express willingness thereafter to do right. Then he should be received again into full fellowship. In the meantime the brother may merely be treated in the kindly, courteous way in which it would be proper for us to treat any publican or Gentile, withholding the special rights or privileges or greetings or voting opportunities that belong to the church as a class separate from the world."
Watchtower, February 1, 1919: "The great adversary is wily, and at all times is quick to appeal to passion. He persuades some that they must take a radical stand against some secular work or activity, and to proceed at once to disfellowship others who cannot conscientiously take this same stand. Somehow they seem to think that their radical stand entitles them in a very special sense to divine favour and blessing. his attitude leads them to violate principle in various ways: (1) By judging and condemning others who do not see as they do; (2) By refusing to fellowship those who still believe in the ransom, the restitution, the high calling."
Watchtower, October 1, 1930: "(Christendom's) members are in bondage to creeds, customs, rites and ceremonies; they dare not disown these or criticize or expose them. To do so would bring down on their heads taunts, reproaches, disfellowship and persecution. Many thousands of the Lords people are held in these denominations as prisoners, afraid to express their disapproval of the creeds, methods and customs of the organization."
Awake, January 8, 1947: "The authority for excommunication, they claim, is based on the teachings of Christ and his apostles ... but the hierarchy's excommunication, as a punishment and medicinal remedy, finds no support in .... scriptures. In fact it is altogether foreign to Bible teachings. ... The weapon of excommunication became the instrument by which the clergy attained a combination of ecclesiastical power and secular tyranny that finds no parallel in history."
(Credit to jwfacts.com for these quotes)