It is a common problem that many of us face. We usually need two rooms to accommodate our family and always request connecting rooms. Sometimes we have been lucky, sometimes not so much. You just have to realize that there are occasions when they are not able to give you what you would want. If you have to split up, you can try changing rooms later, but you will have to make the best of it. You have been fortunate so far. Hopefully your luck will continue.
As many have said, you have to choose from what is on offer. You can consider booking some larger spaces at OKW, for example, where you might find single accommodations that will fit your entire family on real beds. Renting points might be the best way for that. We are considering OKW for our next trip for that reason.
Another thing that you can do is book CL at a deluxe such as the Poly. The number and location of these rooms is limited so that you will have to be very close to one another (i.e. in the same building, at least). Also, then you have a lounge to sit around in and plan together.
I am not generally a fan of
DVC, but sometimes it works best when you want to stay together.
Of course, there is always the option of renting a house and staying offsite.
Good luck!