What on earth do some of you want Israel to do besides what they're doing right now? What is the alternative?
Well, that is kind of broad. There are lots of things, lots of people are doing.
I think, for instance, that Israel destroying 40% of Gaza to construct a "buffer" would be a pretty big mistake not just because of how terrible it would be for the people living in Gaza, but also because of how badly it will harm Israel in the long term. I also think that Netanyahu's policy of settlement expansion and his unwillingness to strengthen Abbas (thus strengthening Hamas) has turned out pretty badly.
I think that there is lots and lots of evidence that the blockade on Gaza has not solved any of the fundamental security problems that face Israel (although it has unquestionably completely ended suicide bombings) and I think it is unreasonable to conclude that this incursion will solve any problems from Israel's perspective. It just strikes me as incredibly short sighted even when judged on what Netanyahu and the IDF have stated are their objectives.
I think the only hope is for Israel long term is to realize that Abbas is the best partner for peace they have. Israel and Abbas have a mutual interest in restoring the PA as the governing authority of Gaza, end the blockade, expand fishing rights in the Mediterranean, freeze settlement expansion in the West Bank and start negotiating a two-state solution. Obviously Hamas could try to stop all that.
Best case scenario: Israel thinks they can weaken Hamas to the point that Abbas can sweep in and negotiate all this stuff and be the savior, but I kind of doubt it. Netanyahu has lots of pre-conditions that seem completely unacceptable to a Palestinian state: (Israel controlling the borders of the West Bank for example) and I think the longer that this fighting goes on, the more likely it is that Hamas is replaced by an even more extreme group.