[Alexander Seil]

Well, if the Freak Lord can be called largely useless, I suppose there's no reason to make it size 6 and trampling.

As for Moloch, it's already extremely powerful, even without giving it trampling ability. Plus, not every Pretender is an SC...most of them are fairly weak.

Now, about the lobsters...yes, that would work, but
A)It costs only one half of what an elephant costs for Arcoscephale and one-fourth in resources, even though (besides perhaps void summons) it is the largest amphibian unit available to either of the underwater races. A bit of a good deal for a trampler.
B)I just realized that it's actually size 5, which invalidates some of my previous points...but why is the Arch Mage size 6 then?