Why some of the members are against the age extension? It should provide benefit for those who didn't appeared due to some reasons. For instance, if one says that 28 yrs is more than enough without even knowing that many candidates skip their masters due to appearing in CSS and when they are unable to qualify the CSS and for about 4-5 year in preparing, waiting for result they are still bachelor.
I think a person who is Masters level or more is much suitable for the civil services due to maturity. Don't be selfish, it can accommodate the vulnerable one.
If one has appeared thrice and now going against just because he/she doesn't avail this opportunity should consider others. One thing to add, the CSS have revised the syllabus which is tougher than before and you need well time to cover the syllabus. So be optimistic.