Im not sure what the land is like where you live, but round here, the base of the pyramid is largely compromised a large areas of monoculture interspersed with odd bits of rough ground. which does not suit many animals from the base up as far as i can tell. For our part our back field has been left unkempt apart form native species of trees and shrubs we have planted, i have no idea if this constitutes 'getting the habitat right'. It will no doubt suit some animals and not others, but is a break in the otherwise largely monoculture that is farmed and golf course round here.
Im not entirely sure there are any pheasant/partridge shoots within 15 miles not sure if our buzzards pose a particular threat to them.
They're not particularly rare round here (Essex), we just enjoy seeing them.
FWIW we are not obsessed with the Buzzards but if they're going to breed were happy to see them doing so in our trees.
We are lucky to get a few different birds of prey on a fairly frequent basis, along with small/medium sized mammals, a relatively large variety of different birds from the wren upwards. We also get a variety of insect life, butterflies, and flora as well, its not just the buzzards that give us a buzz!