After a time a products design can begin to look outdated.  However it may be tempting to redesign there is always the risk that the public will not like the new look product.  The main issue I imagine is that any change may result in lower sales even though the actual concept may not have altered.  When we at A2000 Systems redesigned our original line of cable management systems it was because that on odd occasions buyers were finding it difficult to assemble (not that there was a design fault) and the “new + improved” SPX range is even more popular with the buying public.  There are instances where well established products from days gone by are re-released many years later only for them to prove slightly less popular than the original.  I can think of one that springs to mind - without mentioning its name a bike was re-released a few years back, but whilst keeping the original concept it lost many of its features that make it such a classic (its novel gear shift being one of them).  This is the fine line that has to be drawn these days - keeping that original genius design but whilst updates it for the 21st century.  This is very true for us here - do we go for a radical change in look whilst keeping the very essence that the public wants.  Car design is a classic example of using “shock tactics” for want of a better phrase - however if a product has been of the market for many years the buying public get used to the overall package and and maybe scared off with any radical changes etc.  You can never tell what the public likes!!