Don't you think the "best" solution is to have RB abile to provide RAW data in the format that a Mlat can work, and have it output to RB Local, RB Network or any third party software (such as currently PP).
The biggest benefit would be all capable boxes outputting RAW Mlat data to any software, thus providing the widest coverage.
As reading Tarbat's post above, you seem to wish to have everything but give nothing, in option 2, or have I read that wrong !