Modifier ideas:
Goggles of Revealing on helmet
Boots of the traveler on boots or leggings
Golemancy bell or caster gauntlet functionality on chestplate

Blood magic:
Blood tank carrier on chest plate
Sentient/Living armor fusion(would say no enchanting allowed for balance)

Misc:
Crouching/keybind turns off frosty modifier

Bugs? :
In multiplayer when someone walks near someone who's in an armor forge the forge GUI gets very wonky and nearly unusable?

I'm not planning on putting any cross-mod compatibility into this mod. I will also not introduce any way to turn off the Frosty modifier at will.

As for the bug, you'll have to be a little more specific. What exactly starts going wrong with the GUI? Can you replicate this? More importantly, can you replicate this without any other mods installed in order to eliminate any outside interference? It's best to use the bug reporting template for such issues so that I have all of the necessary information.

Well that's just the issue is it'll be difficult if not impossible to replicate without all my mods because, being the only one who bug fixes and tests on the server, I don't exactly have the ability to have 2 people stand next to the armor forge at the same time in a server with only this mod installed. I am only one person after all and my server pc is... Well, running the main server.
None of the players are tech savvy enough that it'd be a breeze to set up with them and I can only run 1 server at a time.

As for the appearance of said bug, the entire inventory appears to be empty but you can still click where items should be and move them around. The entire gui for the table itself is completely blank (on gray background) until the 2nd player moves far enough away that they wouldnt be able to access the table from the distance.
After they do that, the gui turns completely back to normal.

We've tried moving the table during the glitch, recrafting it, breaking it and setting it back down with the same result each time.
We do have Extra TIC and ender io which do directly affect tinkers construct.
I can work on getting a screenshot but I need a bit of time as the bug hasn't had grounds to happen for a day or so

Unfortunately, I cannot reproduce this bug.

I obviously can't set up my environment to be exactly the same as yours, but running two instances of Minecraft and setting up a LAN world for testing does not yield any useful results. The forge table works as expected, nothing really seems amiss.

Without the ability for you to test this without any other mods possibly interfering, I'm afraid that we're at an impasse as there are too many possibilities to consider. If someone else reports the same issue, or new information comes in, I'd be happy to look back into it.