I'm getting interested in host-augment, since some combinations look very interesting and some hosts look playable on their own. However, as has been addressed here, augment's toxicity is around infect levels or even higher. This has been taken into account for Unstable draft, since the rarity distribution is:
Host: 17 commons, 1 uncommon, 1 rare
Augment: 2 commons, 10 uncommons, 1 rare
I was thinking of including some of these cards and see how they play (if my cube ever gets to be played). My idea was to have around the same number of hosts and augments, more or less arranging them in pairs by color, considering that augment cards will 100% only go to players who picked hosts. This way (and I'm probably wrong) players would get an augment creature for each host they draft. Host count should probably be higher than augment count, however.
So, I'm considering the following cards:
+
+
+
I also really like
Steam-Powered (nothing to do with being a Steam-Powered Giraffe fan), but let's try to keep the augment count low. Although making most of the augments artifacts could really help.
Also,
Serpentine Crocodile looks very cool.
Regarding custom rules, squadroning, etc: I prefer to add as little custom rules as possible so the accesibility is as high as possible, but I'm eager to see your ways to introduce host-augment if you decide to!