I basically agree with that.You can. You can also increase charitable contributions where there is gift aid.
But people would still prefer to have access to that money now which they work hard for, during a cost of living crisis. The thresholds should have moved over time, with inflation.
On tax in general, as I said before the election don't be surprised to changes to the way savings are taxed. Tom is absolutely right that we don't know what's coming in the budget but based on things they've said I suspect we'll see more tax on savings.
On wealth taxes, they tend not to raise much money and there are various reports they stifle innovation and entrepreneurship and damage growth, which is something Labour have said they want to increase. The general trend over the last few decades has been for countries to abolish them.