modify SERVESAS to work with spells.

Can the existing 'SERVESAS' tag be expanded to also work with SPELLS please?

This would allow sources that expect the OGL version of spells to be loaded with a homebrew alternative core set that replaces RSRD with full names of spells. The homebrew could then define named spells as 'SERVESAS:<ogl name>' for compatibility.

There are potential alternative methods, but expanding SERVESAS possibly works as a cleaner solution.
Expanding SERVESAS to other types (FEATS & EQUIPMENT) could also be beneficial.