I am walrus, palatro did it for a gen and is now a thrower.  maple whisky is a throwing lancer, bitchyouaint is a 2her currently.  Not trying to downplay it.  You said Semenstorm comes on with 10 maulers, and i corrected you.  Its 2 maybe 3 maulers from semenstorm.  Fluxy is the only other notable long mauler that i can think of off the top of my head that isn't in semenstorm.  I have never even remotely seen 10 long maulers on 1 team, 5 maybe, but you know that is few and far between.  
On the topic of skill, i can just as easy say that what you do, 1h with shield is skillless.  Ive shielder well over 10 gens in CRPG.  I challenge you to try out this build and pull a decent score.  I promise you, it is significantly easier to score well with a shield, long pointy stick, or a longsword.  
Can you honestly tell me who is noteworthy with a crushthrough weapon on NA other than a couple semenstorm guys and fluxy_mb?  Not to put anyone down, but nobody really stands out besides maybe 4 people.  Players always flock to the easiest way to play games, which is why you see so many crossbows, throwers, longsworders and spearmen.  What do you not see a lot of? Mauls, because 9/10 people who pick one up suck ass with them.