After the last couple of fire seasons, insurance companies were forced to extend certain coverage to their policies. Since they were re-writing the policy anyway, they made a point to make some changes that would help their bottom line as well. This is where the 1-2% deductibles, non-matching policy, and ACV (Actual Cash Value) on roofs came in. When shopping around, these are things you want to ask about. Some companies went straight to ACV, meaning you only get the depreciated amount of your roof (like car insurance), and you don't get the full replacement cost on the back end. Not every company has done this though. Some companies created a roof payment schedule. This is essentially a scheduled amount that your roof is worth at X years. This is what my company has chosen to do, just to not have to go to straight ACV. The roof payment schedule is slightly better than straight ACV.
Of all the things mentioned, to me, the non-matching policy is the one to least worry about. The 1-2% deductible, you may be able to get a normal deductible with a higher premium. As far as the payment schedule, with my company I believe you can purchase an endorsement that will allow you to receive full replacement cost as long as your roof is 10 years-old or newer. After 10 years the schedule kicks in no matter what. Off the top of my head, I believe my company's payment schedule runs down to 20% for composition roofs 20 years or older. It never goes to zero value though.
*If you know which company I work for, shut up about it. I try to provide information when/where I can, but that will end immediately if names start getting thrown around. No one has ever said anything to my knowledge, but you might have noticed that I've got quite a few posts hanging around so it's not like they are difficult to find.* :)
If anyone remembers the hail storm that roared through Green Valley Ranch very early in the season, while the hail punched holes straight through vinyl siding and vinyl fences, and would have produced pictures like above, many of those homes had tile roofs that didn't even notice there was hail.

