The abilty to add soldiers to the table at instant speed is very, very good:
-Someone Wraths the table and plays a creature: EOT Even the Odds!
-You have Door of Destinies in play? Stormfront Riders is a +3 to your entire team on top of whatever on on there already. It's also very nice with the Empyrial Armor you have in there, giving you +1 cards in hand if you bounce back the Riders and a card soldier (rather than a token.)
-Your play group keeps wiping the table again and again? What about soldiers that never go away? Cenn's Enlistment gives you two for every land you can discard.
Speaking about land, you only have 28 and only 1 permanent mana source in your artifacts (Sol Ring) A 60-card soldier deck would have 22-23 mana sources meaning that your aim in a 100 card deck should be about 36-38 at least.
Loxodon Gatekeeper seems like it would be a good addition. It's not a weenie really, but it is a soldier with a good effect to boot. And if you're willing to buff your weenies at the expense of giving your opponents some buffs as well then you could try Divine Sacrament.
Door of Destinies gets counters when spells are cast, but the tokens are not cast, they are put into play. I think you only get 1 counter - however, you can bounce the Stormfront Riders back to put more and more counters on the Door.
Card draw? Weenies empty your hand fast, how will you fill it back up? In the past, I've played Mind's Eye in my Darien deck, but that card has one of the biggest targets painted on it in EDH. Instead, I'm currently testing: Slate of Ancestry Illuminated Folio
Slate is sick the turn after someone swings at you with Darien in play, but in general it's pretty easy to get at least 4-5 soldiers in play. Plus, I'm running Mistveil Plains and Emeria, the Sky Ruin, so there's a chance the stuff I discard will come out later or get recycled back into the deck.
Folio has been pretty good. It's no Mind's Eye at 3 cards a turn for 3, but then again Mind's Eye hasn't been sticking for me long enough to get much use out of it.
The next draw engine I want to try is Farsight Mask, seems like a good deterrent if you have it and/or Darien in play, but it's probably less reliable for drawing actual cards then the other options above.
Depending on how much you use Darien and protect him, Konda's Banner may be better than Veteran's Armaments (especially since we have no trample so that really fat soldier just gets chump blocked by a Kobold or something stupid). Both may be even better in your deck, with the Kor critters.
Good luck with your deck! This is probably my favorite deck to play as soldiers are both flavorful and can become incredibly overwhelming quickly.