I find we have yet the best tapes available for us: mainly Michael's R2R, Apex and Tim's (J37 and others). They are nebula presets except for Michael's ones which are available as plugins too.
Of course a new acqua of tapes would be nice but the best machines are yet here so I find the point of interest could be a plugin which integrates a selection of them allowing us to select machine-speed-formula-bias on the same instance.
And another champion feature would be (if they don't use existing libs) sample all the channels of a machine (4,8,16,24) and allow us to use them a-la-waves-NLS or Slate's tape.
Just my thoughts about it
Mac Pro 5,1 / 6-core Intel Xeon / 16 GB Ram / El Capitan / Reaper / H******* Mixbuss