I think they could at some point remove the 40% tax break, it costs a lot an generally only benefits the more well off. Also SIPPs and how they are inherited will change at some point I think, its basically just a massive inheritance gift for the rich.
The 40pc break you get for paying in portion of your salary above the 40pc 50k threshold?
I guess problem there is it would cause people to put less in their pensions. I've only upped mine as it falls in that band. But yeah. Massive boob for the rich.