Have some way to port MUD from legacy? Lets Discuss
Overview of the Deck
MUD is a deck i like so much in legacy, but it isnt in my reach. Then i start to think some way to play same line in modern and surprise the opponent. We still have access at good pieces play both Legacy and Modern. We dont have acess to the SolLands, then the fast way to make mana in modern is transform it in Urza land'sand, we cant use Wastelands, then we can use the Tectonic EdgeEncroaching Wastes and Ghost Quarter's package.
Chalice of the Void: Not much to say. Chalice can protect us from many forms. Many decks on modern tend to play in one same curve. Chalice can "kill" half of some deck, giving us time. [3~4] Walking Ballista: Can grow every turn, can enter big, can kill small creatures and we can make much mana. Dont have why to no put ballista in list. [1~2]
Expedition Map: The must for all Tron bases. Can get too our Land Destruction lands. 
Wurmcoil Engine: We all know the power of the machine. Give all the time we need for the bigger or can win alone sometimes. 
Scuttling Doom Engine: A good beater, cant be chumpblocked and have a good sinergie with Trading Post, can do damage outside combat ou double damage (attack and sac) [1~2] Steel Hellkite: Flier beater with an EE on body, seens good. 
Spine of Ish Sah: The "resolve anything" piece. Rly shine on mirror, can destroy Planeswalker we can beat, can destroy lands and slow opponent, its rly good.  All is dust: Sometime we just need to reset the table. [1~2]
A couple copies of Inventor's Fair would be very useful. If you already have Tron assembled you can use Expedition Map to tutor up Fair, and then use Fair to tutor any of your win-cons. The incidental lifegain can be relevant sometimes as well.
The utility of Trading Post can be nice, but I don't think it has enough immediate impact to warrant a second copy (and I'm even skeptical of the first). I'm leaning towards more copies of Walking Ballista, personally.
In early list, i used 1 Inventor's Fair, and is rly very useful, i just cut it to make te LD package (tectonic, Encroaching Wastes and Ghost Quarter) for now, Ghost Quarter have no best effect over others 2, i guess i can cut 1 or 2 GQ for Inventor again.
Trading Post is very nice all game, you are right on second, i already cut 1 for now, but 1 is always worth. In playing with 3 Walking Ballistas today.
Hangarback seens good too, but i have no test on this to say. But Wallking Ballista wins over Hangarback for being more flexible. She can kill small creatures, include some creatures make combo like Visier of Remedies, CoCo creatures, can hit Planeswalkers out combat ... can grow best then Hangarback all turn.
We have other targets for Kuldotha, but we can try 1 off i guess