These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Replacement Scrappy: Max Bygraves and Andy Collins. Neither was a particularly bad host per se, but they both fell some way short of the standards set by their respective predecessors, Bob Monkhouse and Les Dennis.
When Bob Monkhouse was replaced by Max Bygraves in 1983, the show lost some its popularity and was placed on hiatus in 1985.
When Les Dennis was replaced by the comparatively-unknown Andy Collins in 2002, the show moved to being a daily daytime version with a lower budget. Fortunes lasted only a few months before being axed.
Another change viewers thought sucked came in 1987, when a new colour LED board replaced the older-style display board; people complained about it, so the old-style board returned in the following series.