I think the disabling idea would be great and fit in with the notion that we require teamwork. For example, they could create a deep freezer attack that targets only one player at a given moment. Then it would be melting slowly (not infinite, so if unprotected it can be escaped). This would force players into a group of at minimum two.
I can imagine bosses throwing at Dung style bosses to make more difficult bosses. There are a few things you need to do in order to be successful. Although some bosses might be less efficient than others (Lexicus comes in mind), I believe it would be a good idea to change the methods that are used to kill them. This could result in exciting boss battles.
Jagex and the Dangers of a Half Assed Wildy
With all the excitement about the revival of the wilderness, I will examine the implications to the game. How the new mechanics from the past few years will work with "the wildy", and what issues this might create.
First let's talk about the boundaries of wilderness, prior to 07 there was no safe zone and, as the basis of the current design for wilderness, it includes safe zones. Although you could argue that they should be kept but they do not help the movement of the current fights. The idea is to move into a secure zone, and it also concentrates fighting around them.