I've seen this as well, In my sisters congregation (english) they dissolved her congregation and made them merge with another congregation in another hall about 20 min away. This was because of lack of attendance. I also know of kids from the spanish congregations that are leaving in droves in my area, I think the younger spanish generation is more educated and are not easily manipulated as their predecessors.
Its a matter of time, the elderly will pass away and the young leave, this will leave them with a dilemma. Their biggest growth is in third world country's with limited incomes and minimal education, so how do you protect your assets? Mandatory contributions, liquidation of some assets and re branding yourself (jw.org). I believe all the changes we have seen is directly connected to their shrinking numbers in more affluent country's and all the lawsuits you can see the desperation in there eyes. That's why we are seeing new ones come here on a daily basis, we need to be mindful of there presence they might come off as apologetics but are battered and lost and are looking for answers.
MC