The reason you might not want your GF delivered is because it does not yet do everything originally advertised. One big example is that the passthru slot is currently nothing more than a slot. There is no S/W to aid you in creating long projects. There are a bunch of other examples.
Advice: READ the offer email. Some people blindly hit accept without reading and then immediately come to the forum venting about missing capabilities.
That said… I like my Pro just fine and am looking forward to S/W improvements.
My response was solely because you also stated “Why would I NOT want my pro Glowforge delivered now?” Whether that was a tongue in cheek or a serious question, there are so, so many folks that fail to read the announcement email and then come to the forum shocked about what they didn’t know. Thought it would be useful to say it again for others that might read this thread.