Diya aur bhati
Pyar ka dard
Saath nibana saathiya
Balika vadhu
Sasural simar ka
Have got trps
Because they show a joint positive family life and family support
Which is missing from madhubala as all of raja family is negative and boring it would have been better if raja family was all positive and fun loving (bit like Bebe n chacha of abhays) and Madhu would have support
And then raja family trying to brig Madhu n raja closer
That's what's missing