Mark
Thank you for your response. I agree that the Welsh league is of a lower standard, however this would improve with the introduction of Swansea, Cardiff and also Wrexham,Newport County and even Merthyr Tydfil.
The Welsh League would then mirror the Scottish League where Rangers and Celtic dominate.
Although both Cardiff and Swansea have had relative success recently with bigger gates and promotion, this will not last. Over the last 20-30 years both these clubs and Wrexham have been surviving on gates of between 3-4,000 usually in the bottom 2 divisions.
A few big games in Europe for them would more than make up for any lost revenue. In fact revenue loss may be an advantage, as these clubs would not be able to attract players from outside Wales and then would have to rely on home grown talent. The knock on affect would then benefit the Welsh national team as they would have a bigger pool to choose from.
Also as mentioned before, there would be room for 2 more English clubs to play in the Football League ie Chelmsford City, AFC Wimbledon etc