I'd like to give my input on the issue. I would very very VERY much be happy with a time-based re-authorization for the Vienna Key licenses. Let me tell you why.
On Dec 24th of last year (2010) my house was broken into. I was completely cleaned out. I lost a Vox amp, a guitar, several pedals, and worst of all the brand new MacPro i had just purchased about a month earlier. They also stole some of my backup haddrives. When i came home and discovered what had happened i was, needless to say, horrified. As i surveyed the result of this raping of my house, they had just completely yanked the MacPro out from the wall; the must have grabbed it and just ran for the door, as all the connecting cables & cords had then followed them out the door, knocking over my JD-800 on its keyboard stand. There was a trail of cables towards the front door.
Let me skip back to a few weeks earlier. All my USB ports were spoken for. I had been trying to set up my old Hartmann Neuron VS Nuke controller (an X-Y joystick CC), which connects through a USB port. As i had run out of ports, each session i started up, i would have to unplug some USB device in order to plug in my Nuke controller. Then re-plug the other device when i was done. It got rather annoying have to unplug, re-plug, unplug, etc. So i decided to buy a small USB hub adding 4 additional ports, that way i wouldnt have to keep unplugging stuff everytime i started up Logic. I just happened to take my Vienna Key out from the back of my MacPro and insert it into the new USB hub.
This proved to be the smartest thing i had done all year.
Now, flash back to my freshly burglarized home again. A trail of cables and cords led towards the door where this human scum exited my home. Along with powercables and audio cords, lying there in the middle of my living room was the USB hub, with my Vienna Key still safely in place. That was the only saving grace of this whole nauseating experience.
If i had not, just a few weeks earlier, transferred that Vienna Key to the hub, i would have essentially lost all of my VSL licenses. Forever, with no recompense. I thank God that these worthless tweakers who violated my house werent intelligent enough to know exactly HOW valuable that Vienna Key was. Had it been taken, i would have lost -- im estimating -- probably about $8,000 dollars worth of software. Sadly, i cannot get back all the original material i have lost. Nearly 7 years worth of music; like i said, they stole my backup drives as well.
So in my case, i narrowly escaped utter devastation. I pray something like this never happens to any of you. But had my V Key still been plugged in my Mac, or had they taken the USB hub, Vienna's current method of licensing would have killed me. So in light of this, i have probably the biggest " +1 " to add to this thread.
VSL, i implore you to take into consideration an alternate way of dealing with licenses. I dont know if it could be implimented so that there were maybe two different options of licensing for the user to choose from. But to me, having a 3 month (or whatever) call-home relicensing/re-authorizing option would be far less hassle than the misery i would have dealt with had my key been stolen.
Anyhow, that's my two-cents' worth for your consideration :)
-michael