I wish they'd go further and remove the 2.5% rachet. Make it equivalent to the 1st percentile of pre-tax wages. So it's a little bigger than the New State Pension is now (enough to absorb and abolish the WFA), and future increases are tied to low-income wages rather than becoming a political argument.
A couple of other reforms: I'd tie the Personal Allowance to the same percentile, and merge NI into income tax, to remove a few loopholes (which don't just affect OAPs, there's a loophole if you have more than one job too). That way, people over the state pension age who receive more than the PA from work and pensions will pay the same tax on those incomes that working age people do. This won't affect the poorest pensioners, but it will bring in some money from the richer ones.
Using one's house as collateral for social care is a good idea too.