The problem with increased speed is that it makes ping differences a huge issue. I'd rather have added complexity than speed.
So things like alternate attacks, fighting styles, etc.
I am on this boat if you asked me. I much prefer the slower (current) combat speed because it makes battles SOO much more interesting and variable.
Native is boring, block well and attack quickly and use a trick here and there, and TADA, win! Native dueling sucks.
Before I moved to my new place with shitty ping, I had a good 4 minute long duel with galgorth that was full of extremely intricate dueling tricks (Chambers, kicks, feintchambers, purposely glancing thrust to do instant side swings, Holding an attack until they release their block not some arbitrary tiny amount of time, of course feints but pffft they are dumb, tons of techniques). The depth of our fight and metagame is something that I've never seen replicated in faster speeds/native.
In fact, our playstyles were completely different and yet on par with one another.