Yes, everyone is entitles to their opinion and I think that you are quite right about some of yours.
1. It hits lower than my auto
In some cases, quite right. If you do not have enough points invested into it, and your melee hits are pretty good there is a good chance QS won't seem up to scratch. You can play around with adding more points or using a weapon with less damage/faster speed to help balance it out.
3. gets evaded so much...
This could be happening because you either have a low cunning ability or your enemies have high physical attack evasion.
Just letting you know that smoke bomb will not affect this.
4. misses an auto when I could do 2 without quicking.
Ah, a common problem! If you learn how to time your QS perfectly you can actually get the skill in without interrupting your melee! If you can master this, it adds a bit of bite to your dps, and your opponents in pvp will be like "where the hell are all these hits coming from?!"
However the faster your weapon is, the harder this is to pull off.