I also do not mean to imply that the list is in any manner, incorrect, inasmuch as what we can know. But the Gauls did not write extensively, so we have to go off of what sources we can. Having a truly 100% accurate army, for any of the factions, is going to be impossible, But, we can come close. We will need to stretch things a bit, but believably. Even if there aren't a huge, vast number of sources, we can imply a great deal, with a good bit of accuracy, based upon digs, and descriptions. What we can assure is that what Pyscho V is offering are vastly closer to the real Gauls than the pure fantasy CA offered us. Pyscho V has used as good as sources as we'll be able to get, short of a bloody time machine. I have seen the same sources, and I'm sure some others will offer up a similar back up.
Of Mori Gaesum, have to name them something, and 'Sea of Spears' is a pretty good one. The early Irish and Welsh refered to the phalanx as a 'Sea of Spears', and such a name easily could've come from a more ancient source. It does match the kind of 'poetic' names the Gauls seemed to give things, using metaphor to convey an image of a vast number of spear heads, easily what they may have called the phalanx, and lingually proper.
Edit; For helmet for the lesser general, I'd opt for the one you've got a picture of, just because I think it's an interesting design that'll give a nice, truly unique flair to the Gallic armor.
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