JMich: I don't have problem paying for more content. But I don't see control schemes as content. As I already said, if they do introduce a paid dlc to add a control scheme, I will be looking to revoke my pledge, as I guess quite a few more.
Oh, and if the game does play well with a system you or I find inefficient, why should another control scheme be in the game? Would you ask for gamepad support on Starcraft, or Kinect support for Unreal Tournament?
I think you don't realise that it's easier to make more content that to make completely new combat scheme. It's much more work than making some more quests.
I also think that you may forget about revoking your pledge, even if they would do such thing. You will get exactly what you paid for, after all. And if they decide to make some more options for gamers, after the initial release, it's not the base to revoke the pledge.
Why another control scheme? Because there are people who would like to pay for it is good enough, right? At least I am, and they can ask their backers, after all.
If I was a Starcraft player, and Blizzard would say: vote, gamepad or keyboard, and people would vote keyboard, while I would prefer gamepad, then yeah, I would ask Blizzard if they were kind enough to make gamepad support, and I would pay for it, if they decided they release it as a paid DLC.
Coelocanth: I guess we won't understand each other, then. Because I find it mind-boggling that you'd pay extra (and especially a high amount) to get something they should provide in the game in the first place. I don't think RTwP or TB is the same as extra content like missions or other DLC. This is a core game mechanic. If it were presented as paid-for DLC... yeah, I'd be out. Now, if they decided to do it as DLC down the road for
free, then I'd be fine with that.
I think we are a bit closer to understand each other, because you just need to make two assumptions:
1) it's not like they should provide that in the game. They should provide a combat scheme, and they will. It will be TB, and that's it. They will do what they promised. RTwP is something that should not be provided in the game, it's an extra bonus.
2) another combar scheme is much more than extra content. As you said, it's like changing core game mechanics. It's more work to do.