I have a false bottom in my keggle and it has been extremely tolerant in the past. I've never had a stuck sparge and I've done stupid things accidentally like let the water level drop below the grain bed and opened the the spigot all the way up so I'm really not that afraid of going fine on my crush. I've been hitting an efficiency around 74-76% so I'd love to get up in the 80% range as it would make a big difference cost wise over the course of the year.
At present, by changing to my "Grain Noodler", I'm saving around $7 CDN per 10 gallon batch by eliminating crushing charges. By buying bulk grain I'll save another $6 per batch. Any rise in efficiency will only be savings gravy on top of that.
Oh, and providing my cascades, willamettes and nuggets produce a decent harvest I may eliminate anything from $10-$17 per batch. If everything works out I'll be down around $20 CDN per 10 gallons batch. That's $0.25/pint!!!