Most of the property is held, now, at the Diocesan level, so he who controls the hierarchy, controls the money. That's what the homosexuals want: control of the institution. They want control of the institution for two reasons. The first , of course is the money (and concomintant power) as you recognize.
I think equally important however, they want control on the ecclesiastical side to legitimise their pratices by saying "see, the Church says it's ok, why we even have gay Bishops and priestesses".
That's a powerful recruiting tool to use on confused teenagers (remember your own awkward stage?) Surveys suggest as many as 25% of teens are unsure of their sexual orientation at some point. Of course that could be anything from the tortured psyche of the 'born' homosexual to the normal kid's wondering 'well, if I don't like baseball (because I'm lousy at it), maybe I am queer like the other kids are teasing me. Virtually every kid get's teased at some point and called 'queer' (in our day) or 'gay'. What's important is how they react and what happens next.
The truth is that whatever the amount of normal or even abnormal teen angst over sexuality, most people end up straight. If 3% of the population is gay (a high estimate), and 25% of teens question their sexual orientation, that means of those who do question their sexualilty, about 88% of those who question their sexuality end up straight, and only 12% of those who question their sexuality end up queer! Grrrr.
The homosexuals want to use the Church to make it seem more OK to be queer. They fantasize about 10-15% of the population being queer, and would use the Church to up the number who end up queer for 10+% of the kids who are unsure to 50% of the kids who end up unsure. Very bad.