Translation:

"I want to be able to delevel my Conjurer because I'm always forced to heal. Even if I level THM, my CNJ is still 50, so my linkshell will still want me to come heal! If I can delevel, I can lower my CNJ below 50 so I'm not forced to heal."

Personally, I think that's a ridiculous request. If you don't want to play healer, don't play healer. If you LS "forces" you to come CNJ, then find a new LS that allows you to play what you like. Asking the developers to implement a (bad) feature just because you want an excuse to not heal is ridiculous.