For weeks, I've been thinking of Pagsulat a fanfic that includes a really cool Disney Crossover Family, and I can't hold it in any longer. Should I continue with it?

That sounds cool, but be sure to be careful with it. You wouldn't want to do things like make Mulan related to Pocahontas or have Ariel be cousins with Jasmine. Although Phillip and Eric could be cousins, because in Eric's dinning room there is a picture of Aurora and Phillip. Sinderella could also have some relation to Eric, because when Eric was getting married to Vanessa, the king and grand duke were there.

Yes

Absolutely! And when you're done, you should post it here. I'd pag-ibig to read it!!! ^_^

Yes! <3

Yes but it has to make sense. I can see Belle and Jane being Meg's cousins (or sisters) but I can't see Sinderella being related to Mulan.
I could see Eric and Aladdin being half-brothers (the only logical reason why they look similar to each other. Cassim was gone for a long time...)

hell yah!!!!!!!!