Not really, there is no effective opposition, the conservatives have established that they can buy seats without significant comeback: she'll get a smaller majority and call it another resounding endorsement.
I'm not as confident as you in the status quo being maintained. The Lib Dems will no doubt sell themselves on a we can reverse the decision to leave the EU. As the Conservatives triggered article 50 they could still be seen as the bad guys amongst those who wanted us to remain in the EU.
I suppose the question to ask those who wanted us to remain in the EU is would you change you vote in this election?
I'm not surprised. It's politically difficult for the opposition to be against an early election: how can they say that the Government ought to carry on for three more years? And ultimately it would have futile because the Government would just have no-confidenced itself and we'd have had an election on the same day.