Although for £90 it probably isn’t worth it, the whole force touch thing is pretty cool. Being able to do ‘extra’ actions by hard pressing (e.g. previewing a file, or renaming it) is quite handy.
There are also a lot of apps now which provide haptic feedback using it, especially in the media creation area. Being able to adjust a pan knob in logic and feel where the centre detent is, or feeling where the snap point is in Premiere are both things that at first are quite cool and then genuinely useful.
And if nothing else – the look of confusion on peoples faces when they have been clicking away on it and then you turn the computer off and ask them to click the touchpad and it doesn’t move at all…