Yes, Parliament used to matter when it did roughly represent the attitudes and interests of the country and was able to make policies for the country as an independent entity. The legal system was also important for securing the rights and freedoms of individuals (against government) and expressing their expectation of looking after their own affairs.
That's now dead. The old elites of 18th c. landed gentry and 19th c. merchants and factory owners, who were patriotic and felt some responsibility for 'their' people (who themselves mostly hated and strove to avoid dependency on the public purse), have very largely given place to a scum of socialist trash-administrators who seek to degrade everyone to the level of immoral chav-y trash, to have every detail of their lives controlled by them, at the expense of any remaining productive and decent people. They have perverted the legislative, administrative, legal, educational and religious systems to create a set of bloated bureaucracies to cause state dependency and cripple individual responsibility and morality in the people; and to import as many as possible of the worst foreigners to destroy any remaining sense of national identity and collective pride in the populace, which might be a basis for rejecting all this filth. It's 'Animal Farm' run as a battery farm by vicious and incompetent socialists. All the fuss from 'fake charities' and government bureaucratic sources, spread by their lefty media, about the health and feeding and compulsory medication of the population is exactly how battery farmers treat their animals. Sadly, few of the animals now want anything better.
It's not just the economic, social and intellectual elites who are to blame - although they should shoulder most of the blame for betrayal. The common people have been all too easily led into slavish and swinish ways, happily abandonning any desire to 'govern' themselves in a moral sense, and hence be worthy and capable of governing each other in a real democracy, in favour of slavery to the state apparatus, which dispenses doles of other people's money to them in return for their failure to accept the responsibilities of free men. I suspect that the ancient Greeks would have had no difficulty in characterising most of the voters in our modern democracies as mere slaves, in mind and function if not in precise legal status. They might have been surprised at the notion of letting useless slaves effectively enslave the free men to pay for their desires, instead of selling or executing them.
All this benefits not only the socialist administrator class, but also their masters, the real global elite, who find it convenient to have the world homogenised and dumbed down, ignorant and indifferent to who is profiting from farming them.
Times change, and as people change it is no longer possible to maintain the old ways of governance as people have lost understanding and desire for them and the mental or moral willingness to implement them. It is useful, however, to preserve outward forms after their inner spirit has fled. It helps to keep the populace docile. That, after all, is how the form of a monarchy survives in Britain, now like a Russian doll, containing the form of Parliamentary Lords and Commons government, containing the form of Cabinet government (perhaps now containing the form of Blair's sofa-government!) . Maybe government by national bureaucracies and politically correct special interests (which have replaced the Lords Spiritual) will also be hollowed, when no longer hallowed.
The old political and constitutional forms will be retained, not least because our repulsive politicians are used to explioting them, but the elites running them have changed. Any pretence that they are running them in the interests of the British people are ever more of a pretence. Elections don't matter beyond public relations deceit and a minor shuffling of snouts around the trough when there is no real choice - which as you know is the basic meaning of the word. It's a three headed one-party system. Whoever you vote for, broadly the same politically correct, destructive, lefty, EU approved policies will be implemented, despite the fact that most of the population may not want them. Even if UKIP, BNP or some new parties arose to greater prominence, however idealistic they might be in the beginning, they would be neutered by the real powers-that-be before they could do much to change the system. It's all a facade, a show to distract and deceive.
Thus it may be that the EU is the same as the local elites, if one accepts that these 'local' elites are no longer any more local than the parliamentary candidates parachuted in by head office against the opposition of genuinely local party members, and they will not serve genuinely local interests. They are just the elite in the sense of the scum having risen to the top of the local section of the EU-wide cesspool of political correctness for the administrative class. These self-serving placemen are worse than the holders of the old rotten boroughs as they represent more evil interests and will serve to destroy those whom they are supposed to defend. The real elite, the 'masters of the universe' are of course international and merely use such people against the long term interests of the really local people.