Not using OpenSSH, yes, that could make the script much more useful. You can use the config file for aliases though.

 HostName
         Specifies the real host name to log into.  This can be used to
         specify nicknames or abbreviations for hosts.  The default is the
         name given on the command line.  Numeric IP addresses are also
         permitted (both on the command line and in HostName specifica-
         tions).

So you could use something like:

Host syslog13
    HostName xsv3ncmnw19n20h3-13
    User radiant

Again, all useless with another ssh implementation. Oh well! l8rZ,