It gave you something to try and aim for to push yourself and to a degree the scanning payments are a modern equivalent which is why despite being a "technology payment" sceptic I am heavily in favour of a small scanning payment. Humans work far more effectively if they can see some quantifiable fruit to their labour.It's interesting you say that, as while Northern (West) has its share of problems, most notably relating to Sunday working, I've always found them proactive with revenue, right back to the 90s. Some would take real pride in doing revenue and doors on a heaving 2-car in the peak, barely stopping moving the entire journey (though admittedly trains are now longer most of them do still try). The endemic laziness down South is quite a contrast to that.
Merseyrail is a contrast to that, but Merseyrail guards have rarely been tasked with revenue over the years (there was a brief period in the late 90s/early 2000s when the barrier checks were removed and they were but it soon dropped away) so the culture has always just been to be operational.
I used to love taking a rush hour train and trying to smash all the sales in. Doing that and working the train actually required a fair amount of presence of mind and skill, particularly in terms of route knowledge and how best to work your revenue equipment.