MNK is a H2H DD whose reduction works only with H2H. Berserker's reduction would fill in the empty space between MA and DW.

Enchanter is the non-magical enspell giver. They tried with dancer, but DSamba adds no extra damage. I made it a pet job because I thought it would add a lot more depth and I thought it would be fun to control Arcana.

Guardian's only purpose is to tank via Emnity control. While THF abilities reduce emnity, they can't be expected to tank for extended periods. The rest is just hate management based on necessity, more than direct control.

Hope this clarifies it! =D