The forces pushing this issue promise to take it to other states. With this ruling the camel's nose is well and truly under the tent. We have a chance to break the stranglehold teachers unions now have on state (and to some extent national) politics. As they say at Rolex, it's about time.
Tenure itself isn't horrid, but "earning" it after sixteen months teaching elementary school is ridiculous. Universities grant it after 5-7 years of service, a much more reasonable performance sample.
An issue that may arise is whether making teaching a less attractive occupational choice will make it impossible to staff schools in depressed areas. What to do if nobody is willing to risk life and limb in ghetto schools? Close them down and send the kids home? Or raise salaries to a level high enough to attract people who'll take "hazardous duty pay" jobs: the ice road truckers of the teaching profession?