I like Moggcatcher, but the RR would make me have to rebuild the manabase (which is fine) but also reduce my threat count. I happen to own the Recruiters, and I feel they're superior to Moggcatcher because right away they net you card advantage. If your Moggcatcher dies while summoning sick, and it's pretty fragile without Chalice, then you didn't really get what you wanted, unlike Recruiter. SoFI is a big problem for this deck, I'd imagine, and another way to zap a sick Moggcather.
Recruiter oftentimes is another "must Force" threat, especially with equipment. It's even fine against white removal, doing the "Recruiter Combo."
But I like your list, again, I'd have to drop Zoetic Cavern to make the RR for Catcher. Zoetic has been incredible vs DnT for me, and is just randomly great. I think Cavern of Souls is awkward when you want to resolve a Rabblemaster or Blood Moon. I prefer just basic Mountain in the slot. Wasteland that, turn one!
I did find a piece of arcana that no one considered so far, mostly because no one runs equip:
Squee, Goblin Nabob. I think that guy could potentially be a boss in my build, again, "dodging" non-white removal. I'mma drop Hanweir for that nutjob.