As always, it's a matter of how much risk you feel it is worth taking for such a route. Why climb it in off conditions? Luck becomes the deciding factor over skill. I slow down on the west side after April in general, and if possible, do that stuff in winter. It's just a lot more scenic and fun then. However, things like sandy hw have been climbed in June with good conditions. Hell, the old timers used to climb all that stuff in August.
None of the incidents on the west side had to do with crevasses on the Reid Glacier. The bergschrund gets rather large, and cracks start opening up around the saddle a bit. There is no black and white go/no-go on that decision.