Flemish part here .
I'd also care to disagree with your statement. I have played the "weaker classes" of the game for the past couple years (I invite you to try a scout pre-changes for example). I have also played both wizard and warlock without any 'good' gear at all.
Having vit twins may reduce your damage, but it will not make it anywhere near bad. Mind you, you should also sport an INT-twin set in addition (after all, you can wear 2 sets).
Current damage output from skills are overall high enough to kill mobs with ease. With or without VIT twins. Medium player or not, having a dedicated farm weapon is and has always been a necessity if you cannot afford an upgrade/epic weapon. It's how the game has always been played prior to these weapons, anyway. Eventually, AD weapons are fairly cheap to make in comparison to DD ones.
Naturally, this same weapon should sport the MA/INT stats in addition to your 3x AD 1xedoneh-hp/mp leech.
Scouts have had it way harder, so have other classes.
Mind you, dhans used to only get a party if they were having either scrolls or seals - talking about 'p2p'.
The costume is also a one-time buy and still a better investment than most other choices at the moment. Plus it's not an extreme maintenance.