Actually the Life Cycle and End of Life matrices are publicly available information for any product including VMware Fusion.
I know it is not very helpful for your particular problem, but I pretty much never see lockups or any issue in regards to stability with my setup and I'm a pretty heavy user.
The question of course is what is different in your setup for having such a troublesome experience.
One area where I sometimes have issues with Fusion 3.x is with the NAT network which might run amok and eat up 99% CPU. If that happens I can just restart the network stack and continue using my VMs. Don't even have to start/stop them, just reboot the network and go.
Hope this helps,
Wil| Author of Vimalin. The virtual machine Backup app for VMware Desktop Products
| Vimalin : Automated backups for VMware Fusion and VMware Workstation Professional
| More info at https://www.vimalin.com
| Twitter @wilva
| VMware Wiki at http://www.vi-toolkit.com