I thought the omicron is only useful for the KAM mission.
It is not ONLY useful for the KAM mission, but it is clearly designed for maximum effect during the KAM mission (converting Protection to Health, for instance, is an effect which negates one major effect of Trample).
I'm very much looking forward to seeing how it performs over the course of the TB, but I expect that if relic levels are high enough you can 4/4 CMs with BB in p1 & p2, grab your KAM shard in p3, and then in p4???? Not at all sure what relic levels would be required to 4/4 those LS CMs in p4 using pure BB. It might be high enough that it's not worth it, whereas my guess is that with just a little experience handling things like Sniper Droids r5 will be enough for p1 & p2, and a lot of folks should have them up that high for LV. (More people don't of course, but at least they don't have to regret taking BB to r5 if they do that since those relic levels will eventually be required for their LV.)
How the Omicron performs in p4 on a relic-5 squad is going to be key to proving the overall value of the Omicron.
Of course some folks will consider a single Omicron a worthwhile investment just to get KAM, and that's fine, but I'm still hoping for more.
On the plus side, even though we can't verify it right now, the new TB is supposed to be themed for post-prequels, pre-Ep4, which is exactly the time that BadBatch is active. Even if BB has a weakness against Sniper Droids right now, that doesn't mean it will have a similar weakness in the new TB.
I'm not saying put on the Omicron and hope that in 2 months it will be useful, but just pointing out that if you rushed to put on the Omi before we knew its current value and you're disappointed in your choice, then it's possible that the value will increase during the new TB.