Alright, I think I have something nothing in the industry currently can do.

Here's the idea. 

1. Reserve the "-" (minus) key for "spawing".

2. Create a secondary role any Character-Class can swap into.

- The type of roles:

a) restoration

b) support

c) control

d) tank

e) dps

f) buffs

3. re-install table-targetting for some of these roles

4. slow down combat to allow for more time to use our full move sets and abilities. show casing them as well as fully utilizing their potential. including defaults like back and forward placement. side to side possibly informing greater potential for knockdown success

5. create enemies that are actually responsive and vulnerable to our full utilities. like flinches and knockdowns. stuns. etc.

6. enable players to be able to spawn roles on the fly using the "-" press.
(this must be set up while in town ~ the role they will perform)

For example, I am playing a Mystic.
- This essentially a monk.
- Why can't I heal? You're not capitalizing on the full life span of this game. There's nothing else like it in the industry. And there won't be again. You've done something incredible with this game. It has many decades left to it with just a few regional additions that are content specific. 
- Why isn't there tab-targetting? I want to monitor the health and dynamicism of my party. I want to support them.
- Why is combat so immediately over? I don't get time to really let loose on anything. Not it on me. It's just dead or dead. 

Imagine instead this scenario... 

 - I go into a region specifically made for this kind of combat.

I've picked a number of "cards" that are like pre-built role-skills OR one-package-roles (from the list above, A to F)

I can swap into from ANY of the already existing characters. Just by pressing "-".

Now suddenly it isn't like all the other Korean games where I have to be two things at once. Some idiot hybrid class that's just beyond worthless and miserable to play. I'm fully a Mystic with all my kit intact. However, on the fly I can swap to being a Priest/Healer type. Or I can swap that out (in town) and become the party's tank. Etc. Support being things like debuffer and buffer being things like... providing extenive buffs. Auras potentially existing for these roles so that when I swap back the buffs continue to apply (or debuffs where against enemies). 

This would radically expend the amount of potential content BDO has, can have, and of course the life span of the game as a product many more decades. 

Thanks

That is just too much to ask for. And several ideas are just terrible and also would require a complete revamp of the whole game. This isn't worth it.

You want to cram a trinity based class system into an every man for himself type MMO that doesn't need it,  and want to turn a pure action game into weird hybryd combat system like TERA's.  You are essentially asking for a new game.

Also let me remind you: the last time PA developed a support class, it failed so bad it got downgraded to an enjoyment class.