Yeah, Team Nijmegen is absolutely pr0n and everything, right...

Well, you admit yourself that you looked aroung and saw the lists with Enlightened Tutor (and Clemens was the first to play Tutor in the deck, owning the monthly Hassloch event with it).
Thus it is quite outrageous not to give credits. However, you are right about the swarm-aggro problem. But we already have 3 possible solutions:

Engineered Explosives
Dueling Grounds
Rhox War Monk

We tested those cards and Rhox War Monk turned out to be quite decent, having Brushhopper stats and Lifelink which make him very potent as a blocker and as a attacker as his lifelink ability improves the odds to win the damage race before the opponent.

The Red Splash for Pyroclasm seems to be out.dated for me, though Stefan (spiritofthewretch) hyped the red splash again and again, but not because of Pyroclasm, but because of REBs and Price of Progress.

Pyroclasm is not relevant at the moment as Goblins has somehow lost it's status as DTB and is not played frequently anymore.

I still think that UGw does not need a splash which makes the manabase inconsistent (the fetchland-constellation sucks).

The solid manabase is one of UGw's main strenght, altogether with the best removal.