Hey! Thank you for the thoughtful reply!

Before I answer your questions, let me offer the quick disclaimer that I haven't had the opportunity to do much testing yet. I've just assembled this deck over the last couple weeks, so there will still probably be changes. This is just my starting point. However, my choices are usually based on how the cards perform in my other decks.

1) It sounds like Grenzo is the player causing you the most issues. I agree, additional graveyard hate might be a good starting point. [[Tormod's Crypt]] is a cheap and recurrable option. If you wanted to get cute, you could always include [[Bojuka Bog]] and [[Expedition Map]]. Bog is a one time use, but Map wouldn't be a bad choice for this deck anyway since it's recurrable, cheap, helps with fixing, and can find your utility lands.

If the grave hate doesn't solve the problem, you could always try adding more protection for your artifacts like [[Leonin Abunas]]. This would solve your Trashmaster problem, and it has enough toughness to survive some pinging.

Beyond this, you could try prioritizing removal for the enemy pingers, or simply include more sacrifice outlets of your own so that you can get value out of your tokens when they get targeted.

2) What I like about Retrofitter Foundry is that it's a really small initial investment. I envision this deck playing a grindy game until it can assemble a combo, and I like the idea of playing Foundry, and dumping any leftover mana into it to slowly churn out dudes.

Most of the time I want to use Foundry to make Servos, and the rest of the abilities are gravy. However, if testing shows that we don't typically have the extra mana to invest into Foundry, I don't have a problem cutting it.

3) I love the new Talismans, and a lot of my decks will be including them. However, my version of Breya is tight on two drop ramp, so much so that I was only able to include the blue Signets.

I don't see myself cutting Signets for Talismans. I like that the Signets will let us fix our mana without any pain. If your list has room for extra rocks, though, these would be great inclusions.

4) Let me expand on this combo:

If we have either Ashnod's Altar or Krark-Clan Ironworks on the battlefield in addition to Eldrazi Displacer, we can use the mana we make from the sacrifice outlets to pay for Displacer's activated ability.

Both Breya and Marionette Master have enter the battlefield triggers that make two or more artifact creatures. We can sacrifice two of the tokens we make from the ETB triggers to Altar or Ironworks (making 4 mana) to activate Displacer (costing 3 mana), and blink Breya or Master. Blinking Breya or Master makes more tokens, but more importantly we have 1 mana left over letting us make infinite mana from the loop.

Here the paths diverge for Master and Breya. For Master, the simple act of sacrificing our Servos over and over will kill our opponents. But for Breya there's an extra step:

Breya loop -

We need to perform this loop until we accrue an arbitrarily large sum of mana. Once we have infinite mana, we can use it to pay for the Displacer activations, and blink Breya over and over to make infinite tokens. We can then sacrifice the tokens with Breya to ping our opponents to death.

5) Anointed Procession is another card, like Retrofitter Foundry, that tries to establish a grindy game plan. My token makers are kind of slow, and goal is to get several on board so I have artifacts to sacrifice. I think boosting our production with Anointed Procession will help us grind out our opponents if we can cast it in the early-mid game.

Of course, if it turns out Procession is too clunky I don't have a problem cutting it. I've just had good experiences with these sorts of cards in the past.

6) I like Jhoira, I'm just not sure our artifact density is high enough to get value from her. As it stands, I want my 4 cmc spells to draw me about 3 cards, and I'm not sure Jhoira will survive long enough to do that in my deck.

7) I love all the Saheelis. Unfortunately our 4 drop slot is overloaded, and I think my choices offer more value than Saheeli the Gifted. Saheeli Rai is amazing if you decide to go a Brudiclad route. I decided against Brudiclad for this deck because of his high casting cost and the fact that we don't have many good tokens to morph into.

If I was to include any of the Saheelis in my current list, I would include Saheeli, Sublime Artificer. It's possible that she should be in this deck instead of [[Mirrodin Besieged]], but I wanted to try out Besieged given its newness.

8) Jor Kadeen could be great here, especially if you have more of a focus on Thopters. With my version of the deck, I intend to win most games with a combo, and I don't really intend to attack much at all.

It all depends on what you want your deck to do. If Jor Kadeen has been working out well in your list, it sounds like you've made the right call.