There is a clear line here between Farmers and nonFarming Land Owners.
One is a benefit to the economy and the Country the other is not.
It is unfair on the Farmer to penalise him based on the questionable legitimacy and tax avoiding motives of the nonFarming Land Owner.
IHT is a controversial subject. Farmers are in the unenviable situation to own millions of pounds in assets (and it's not just land, but equipment, cattle etc all add up to millions to be included in the estate), but not actually be able to cash in any of those assets, as it'll seriously affect their sustainability. The no 'IHT for Land' was given to farmers as a way of easing this pressure. In a world where IHT exists, this is (was) OK. Now the landscape has changed (apologies for the pun) and created the nonFarming LandOwners, the IHT rule needs reviewing. The farmer still has the same cashflow issues as they did in 1984 and still needs financial help in order to provide the stability and food security that ANY country requires.
I have no problem removing this rule, so long as the farmers are compensated/helped in a different way. Surely it's better to target those nonFarming LandOwners using the land for tax avoidance purposes, and impose IHT on them?
Personally, I think Stamer and Co have just seen an opportunity, in the wake of their 'no tax rises' promise to get some more money in and go after those people who aren't going vote for them anyway.