There seems to be a lot of fear about the death of BioStar and the loss of its content and users. To allay these fears, I'll tell you about a similar process which happened to Electrical Engineering.
A long time ago, there was a site called http://chiphacker.com. It was a support forum for a hobbyist electronics reseller, http://littlebirdelectronics.com/, but also a general electronics Q&A. This site (like BioStar) existed on the Stack Exchange 1.0 platform.
Then, the Stack Exchange 2.0 fad hit. An Electronics Design proposal was started on Area51, (much like the Bioinformatics proposal) with the comment
This would be the SE 2.0 version of Chiphacker
It passed through the Area51 process, and (amidst great stress about the future of Chiphacker and the defunct previous "Electronics Exchange" SE 1.0 site, see What about Electronics and Robotics in Area51? - this could be aleviated with a little communication), emerged with a complete migration of the Chiphacker site to http://electronics.stackexchange.com. In fact, Chiphacker now redirects to Electronics.SE, and some users still access the site that way. Other than a prettier UI and cool new features, users won't notice a difference.
See What happened to Chiphacker? Electronics Exchange? for more information on the process.
This has also happened at Personal Finance and Money and Startup Business which seem to be doing OK.
For Biostar, you'll want to talk to the site admin, who seems to be Dr. István Albert based on the link in the footer(though you probably knew that) and see if he wants to migrate to SE 2.0. If he supports a migration, then vote this proposal through, ask him to set up a redirect, and enjoy the benefits of an SE 2.0 site. If not, well, you're correct, there's little point in starting an SE 2.0 site. Better to transition to OSQA.