In my opinion, bdo urgently needs more classes. I believe it would be worth delaying until 2020ish if you can implement these ideas properly. They are only rough drafts and may not be the final product but they would add much needed diversity to the game.

Deathblade

This class would be a mix between tamer and berserker. It would be very mobile as seen in the picture and be able to infiltrate the enemy lines during node wars and apply ccs while still being fairly lethal by itself. 

Temptress

This class mainly would be used as a support during pvp since it would rely on strong aoe debuffs for enemies and buffs for allies. Agility would be reasonably low but should be compensated for by the significant support abilities. It would be one of the weaker classes in pve since it would lack the offensive abilities of most other classes (similar to valk).

Darkmage of Death

This class would be very lacking in defense and mobility compared to most other existing classes which would be countered by having very strong damage dealing spells. It would be like a wizard/witch on steroids but may lack the self heals and mobility to focus more on pure damage.

Technomancer

This class would be one that relies heavily on technology to augment its abilities. Mobility would be very high and it would be an ideal scout. The offense and defense would be average and reasonably balanced but the class would be versatile in many different roles and be fairly competitive.  

Hopefully we get these soon, feel free to leave your thoughts below.

The game is probably delayed til 2020 anyway, lol

Technomancers dont belong in the bd world

I would rather see them make opposite gender Dark Knight so you could play a male version.  I know that's not a new class per say although they could chnage up some of the skills to make it similar albeit slightly different or different awakening etc..