TTOS is the smallest of the national train clubs -- LCCA, LOTS, and TCA are larger. Size matters for maintaining an effective organization. Showing a useful website is a marketing must-have. Presenting well-attended train shows and conventions is a big plus. Outstanding publications bind the members to those clubs. LCCA has the HUGE benefit of endorsement by Lionel LLC.
The passing of National TTOS on 12-31-23 may be an indication of "the numbers" out of sync with reality. If the divisions survive, club spirit will continue at that level.
Mike Mottler