I'm going to agree with the original poster. Going from early access to find that all the non-origin characters had a weird restoration bubble (it isn't immunity) as their origin source ability was a bit of a disappointment. You're far more likely to have four people who want to play four customs, than four people wanting to play Ibfan, for example. At the very least, Time Warp would have still been useful in such a situation.
Even then, giving customs the option to pick a couple of staring source abilities would have been nice.