Notwithdstanding the title of this thread I am surprised if anyone on pfm could be bamboozled into buying the expensive tool needed to utilise the things advocated.
If mains plugs are what you are concerned with, just get fused 13A MK mains plugs. These are fitted with a captive nut, knurled on its underside for each of the three terminals (live, neutral and earth). All you need to do is twist each wire clockwise before putting it around the terminal with a clockwise twist.
After tightening down the screw, each wire is twisted further and confined within its plastic channel. No stray strands: no fractures. Perhaps I should do a video.
When using terminal blocks just put a tiny washer (scored on the underside if you will) on top of the wire before screwing down. Job done.
Perhaps I should do a video. Pay me £1million to do it and I might give it some consideration- but I doubt it.
I may have missed something - but I can't see the reason why leads should not be tinned with solder before screwing down, nor why an ordinary pair of pliars cannot be used to crimp ferruls.