What's your opinion on Great Eastern Great Family Care plan?

You have to ask yourself whether the additional premiums to be paid, versus the coverage, versus getting the term plan is worth it or not. I can't really advise on anything... but

Mathematically, if the premium is 1% of the sum assured, after 40 years, you would have saved and invested (at 4%) that amount to reach the full coverage.

For 2% premiums to the coverage, it takes about 27 years.

For 3% premiums to the coverage, it takes about 21 years.

I hope this forms a guideline.