I take your point, which is why i said you can't be too self-deprecating. Which is why I think there needs to be a comic element to it.
I like it. I guess one danger about the whole thing (I don't know how serious I am about this. I mean is anyone actually going to make this?) is that if the carer's lives are portrayed as too hard then it gives the audience permission to brand the carees as burdens to society, so they have to have their own stories and be very personalised so that viewers don't just think "If that was me I'd put them in a home/care centre because I wouldn't have time to care." etc. etc.