Relayer is very powerful. It's not only a délay but also a multieffect with eq, distortio, reverb, etc.
You can program a sequence of different delays.t
It offers a compréhensive set of presets and the UI is really well thought
Perhaps there will never be a Sampletank 5 ; since ST4, IK has launched the Modos and Pianoverse, using other technologies. ST Stretch is outdated and there's no reason IMHA to develop a new software, which cost money, with these old tech, especially since there are now so many alternatives, and not only Kontakt or Halion
I agree with you, it seems to be more usable than I thought
in fact it's probably always the case with the play serie : some good sounds among 80% of crappy ones