I realize that remapping the LSB Typeface is probably more trouble than its worth, but...
Most of the keystrokes for the LSB Symbol Typeface make sense even if the typeface isn't loaded. "P", "C", "L", "R" all keep the same basic meaning, even if they don't look as neat.
"!" and "@" don't make quite as much sense, but how often are you going to use "I" or "II"?
"D" for the doxological symbol is also not as easy, but working with Windows machines, you cannot as readily just type "Option-J" to get the Greek "delta" as you can on a Mac.
My idea, however, is to remap the cross symbol to the plus sign rather than a capital "T." Working with exporting the service to HTML (a way cool feature of Builder, btw. Kudos for that!), often the LSB symbol font is not loaded on the viewing computer. It is just wierd to have a "T" in the middle of the creed, so I usually go back through and change that code to a "+".
Just an idea for your spare time (LOL).