what about sibilant release?

[LinguList]

We have still many cases like "bz" or "ps" or "ks". But I am at a loss how to treat them, as they aren't clusters according to our strict rules and also fail the definition for affricates. So should we write them with k-superscript_s and add the feature "sibilant-release" or is this too radical?

[cormacanderson]

I would be very tempted to do this, although it is a little radical. The genuine clusters that seem to be outstanding are these ones and very occasional /kl/ and /tl/ that aren't affricates.