An exodus of top Welsh players to higher-paying clubs in England and France has formed the backdrop to the dispute over who controls the professional game in Wales and the money generated by it.
That has raised the spectre of the regions splitting from the governing body, possibly to join a new Anglo-Welsh competition with the top clubs from England.
But the WRU have a legally binding obligation to enter four Welsh teams into the Pro12 and Heineken Cup competitions next season and without the regions they would have to develop four new sides capable of competing in these tournaments.
"Both parties should come together, thrash it out and make sure that the decision they make is for the benefit of Welsh rugby and regional rugby as a whole," Lewis commented.
The Scrum V debate: The future of Wales' rugby regions
"Sit down and look at everything, what is the best for... the supporters because they are very important in this, they are the ones who come and spend their hard-earned money every weekend.
"The supporters are not coming because they're not happy with the standard of play and the competitions that we are playing in."
While Lewis would like to see an end to the strife between the WRU and the regions, the 45-year-old believes an Anglo-Welsh competition is an attractive option.
Lewis was playing for Cardiff when they and Swansea
rebelled against the WRU
and played a series of friendlies against English sides in the 1998-99 season.
"I was involved in the situation... when Cardiff and Swansea went over to play in England and we thoroughly enjoyed it," Lewis said.
"It was the cross-border competition and the supporters supported it very, very well and I think that is the way forward.
"The only problem then is that Wales as a nation would be quite selfish, because Ireland and Scotland are going to be left in the lurch.
"We've got to be very careful, we've got to discuss it with all four or five nations that are involved in this because it is going to have a massive impact on rugby in Europe."
has been reported
that Premier Rugby Limited, which represents the top-flight English clubs, and its broadcast partner BT Sport have offered each region £4m a season to compete in an Anglo-Welsh competition.
The uncertainty surrounding
the future of the Heineken Cup,
with French Top 14 and English Premiership Rugby clubs threatening to withdraw from it in favour of a new cross-border competition, has caused further uncertainty for the Welsh regions and affected their ability to make concrete financial plans.
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