ml> that will likely remain as many are on dialup connections and unless
 ml> fidonet also sets up a ddns, there's few ways for one to have a static
 ml> domain name for a dynamic dialup...

You can point your fidonet.net (or whatever) to your selected
DynDNS-provider with a CNAME. All DNS-resolvers follow CNAMEs until they
find an A-record, so dynamic IPs and dialups is not a problem, if you don't
mind using existing DynDNS-providers.