NJ, I never think it's "a good idea for (any Tory) to obtain a working majority"!
That said, I would probably have found virtually any attempt to cling on to power by one's bloodied finger-tips and eyebrows preferable to the one actually chosen; namely, a straightforward cash bung to the disadvantage of equally-deserving others. That reeks too much of the appointment - or sacking - of an England football manager!
It occurs to me, for example, that - having just won a majority in a General Election, Mrs Weak'n'Wobbly could have gone straight back to the country for a larger one.
She'd clearly already abandoned the Fixed-term Parliament idea, when she saw a potential Tory and personal advantage in doing so. She had also abandoned the notion of impartiality as regards the Northern Ireland Peace Accord, by placing herself over a barrel to one side of that agreement.
I very much doubt that she will see out her term of office, so the Men in Suits at Tory HQ had better get their thinking-caps on!