The last thing the Tories want to do is hand power to Corbyn's social movement, or whatever it is his supporters are pretending is going to happen.
More seriously, though, this would give an opportunity for the SNP to stand on an explicit manifesto of "stay in the EU or give us Independence", and if they did manage to grab all 59 seats on that, how the heck can this be ignored? All that said I wouldn't mind having a general election now but in practice it would surely cause more problems than it solves, handing an artificially large majority to the Tories and providing exactly the uncertainty that we'd just been enjoying following the uncontested Tory leadership election.
I'd suggest maybe an election would be more appropriate nearer the time when either (a) we trigger Article 50, on a ticket of establishing who we want to lead the negotiations on our behalf, or (b) the two-year negotiations are about to conclude/ have just concluded, to decide who leads us at the start of our post-EU period.