1. I am unaware of any ways in which you could exploit bed spawns. If you could state ways in which you could do so, then say, because I really can't see it.
2. I think that both the raiders and the raided would benefit from this. The raided would be able to come back quickly, regear and go out and fight. They would actually have the potential to kick raiders out of their town, and can do so quickly if they want to. From the perspective of a raider, this would also be good; because you'd actually be given what you came for: PvP. You wouldn't sit in a town for hours waiting for people to come out, you'd actually get to do something. The fear of people coming out TOO quickly (to kill you) shouldn't be an issue if you are well prepared. Like what EtKenn said; PvP would regain stategic elements.
3. And you're right; recalls, canals and secret entrances can all help you get back to a town. However, it would always take much more time, effort and hastle to do so and simply using a bed. The whole idea of being able to fight again and again is to give everyone the chance to actually be successful. Low-leveled players get to constantly attack high-leveled raiders, and low-level raiders constantly get to attack high-leveled citizens (presuming the raider sets up a bed nearby).
4. ''No, i'd like to know their opinion on my suggestion. I didn't suggest ways to combat bed camping in the previous thread. I recall that someone (I think either Kainzo, Danda or a programmer) said that if a solution to bed camping was found/created, then they'd bring back beds under that system. I have offered, what I believe, to be a suitable solution, which I would like their opinion on. Kainzo did say he would look into it, which is why i'm bringing it up.''