I researched a bit the "merger" news and indeed it seems that the Portuguese League is pushing for it. However, I really can't see La Liga going for it for the reasons I mentioned.
I'm really against the whole superleague concept, even if it would be class from a big club fan standpoint - since we would make the cut - it would totally suck for the small, storied clubs that would be sacked off as a result. We should work towards propping up the small clubs in big leagues and the smaller leagues in general. UEFA should be more socialist and spread the wealth.
For starters, redirecting CL money to the EL so clubs playing in the European second tier could seize it as a chance to grow, would be something easy and with meaningful results.