Master/Slave port - need opinion

Hello,

I like an opinion about creating a master port (released version) and a
slave one (devel snapshots).

games/exult <https://www.freshports.org/games/exult/> only follows devel
snapshots forgetting that exist between them, stable releases, as shown in
downloads page:

(- Exult v1.6 - official release)
(- Exult v1.7.x Snapshots of current code)
- Exult v1.8 - official release
- Exult v1.9.x Snapshots of current code

What about creating a master port for v1.8 and a slave for devel?

Thanks in advance,

Nuno Teixeira