Hi unfortunately these features will not be added to PicoScope 5 as in the foreseeable future it will be superseded with PicoScope 6.
With PicoScope 6 you can use the waveform buffer, you can create a waveform buffer to have up to 1000 frames (under preferences). You would also have to choose Repeat as your triggering. This way every time a signal is triggered it will be saved on the waveform buffer until it fills up all 1000 frames, make sure you click on stop once you collected all your data as it will cycle round.
You can then save all your waveforms onto your computer.
Hope this helps.