I find red creating Food tokens to be a bit too much even for an environment such as this. I would think of another angle for red to take here.

Since red likes to hose life gain and can also remove artifacts, one idea that seems natural to me would be to position it as the 'hosing color' of the environment - somewhat like how green was in the original Mirroding IIRC.

This would in my eyes achieve multiple things at once:

• Remove the color pie issue of red having direct access to life gain.
• Add some variety to gameplay so that not every color is doing the same thing of amassing Food tokens. Right now, this, Crumbling Shambler, and Novice Pastryboy are all low-cost creatures at common in different colors that do similar things. Allowing red to be the 'hater' in the environment would lower some of the sameyness that might represent itself.
• Red hosing Foods would in some part alleviate the potential problem of excessive life gain in the environment. For that same reason, I would also be thinking of including some sort of a Tainted Remedy / False Cure variant in black somewhere in the set here.

With that direction, some of the cards, say like one with the name of "Pie Thief", kinda write themselves. So artifact / token removal, preventing life gain, some cheap threaten-like stuff in the vein of Goatnapper / Metallic Mastery for noncreature artifacts - you name it.

These are the sort of scenarios where you can use the color pie to your advantage rather than see it as a hindrance. Like how Terror was reprinted in the original Mirrodin in which it was completely recontextualized given the nature of that environment (high number of artifact creatures) - same type of thing can be done for various principles of the color pie.

That's my 5 cents at least.