I agree with Bradley - I'm a reseller and have a number of sites to bring up to compliance with this policy. (And thus, a whole bunch of platform decisions to make and work to do!) I hope that some time will be given on this one.
I often deliberately don't upgrade right away, unless it's a security patch. I'd rather wait and see if major code revisions are stable before subjecting my visitors to new, buggy code.
I realize that it may be impossible to give notice before a suspension in some cases, as they may be emergency situations. But it seems like there might be a 'red line' of some sort in other cases - a site consistantly pushing the boundaries on server load, perhaps - could we get prior notification on those before suspensions?