You are absolutely right, The creatures are a huge part of the deck and protecting them is a something I'm realizing I lack. On the other hand, Do I need to protect All of them? in this deck (as I'm sure anyone looking at it is aware) a strong source of power is creatures dying and multiplying their counters on to other creatures, often to get a close win. With this in mind, I have a couple of thoughts:

• First adding more/any mass protection. The suggestion to add Teferi's Protection is amazing at this, ensuring to make sure that nothing dies as a result of my opponents actions and putting the control of when/how they die in my control. I can definitely see this helping, but I think I can do more.

• My second line of thinking is, if I want my things to die and my opponent is doing the work of killing them for me, can I use specific creature protection to turn board wipes into net positive interactions. (I.e. using Fight as One to only protect Hangarback Walker and maybe Metastatic Evangel ensuring that the board wipe will only stand to make walker an even bigger threat). I do see that this plan is very ineffective against exile based wipes, and teferi's is, again, a great option I'm going to add!

I think somewhere between these two thoughts of protect everything, and charge the win-con with my opponent's removal is the base of what's going to become my sideboard. I really want cards I can use to protect my creatures into game ending resets, but I also want cards that can, for low mana, protect a single target.

again, thanks for the feedback! and any card suggestions, especially with all the new stuff out, are appreciated!