Rachel Parties

[GM-Ayu]

But I'd think any team with more than 4 members, the exp would start to become undesirable for all the effort put into the party.

It depends. Can the extra new member assist in helping your wizard mob even better, or reduce the amount of items used/time needed to rest for hp/sp? Chemist or Prof are great edition to a party of say FS priest, wizard and archer/tank. SP healing is remarkable in Rachel especially if the FS priest is taking the role of a tank as well against Seeker. Back up healing is also good in case of stone curse or one of the many other status attacks there. Profs can aid in attacking while chemists can heal/homunculus. Sometimes chemists can do some strange yet wonderful things with plants or even marine spheres.