Considering that every year, new Lupin specials and OVA's are created and FUNimation hasn't bothered with any of them (which sucks, because "Episode 0" deserves a license), I doubt they bother with the TV series.
As for Tenchi, well I do want them to completely license-rescue that entire franchise but Geneon Japan I think pretty much killed that now that they are releasing the three movies on Blu-Ray w/ the English dub and subtitles (the U.S. and Japan are in the same BRD region). I do want FUNimation to score the OVA's for sure and give them brand new subtitles from scratch for accuracy.
Well, these latest Geneon grabs are true license-rescues and not just distribution deals. As such, FUNimation *could* resubtitle them and redub them if they wanted, but I doubt they spend the cash. I honestly think that FUNimation's main goal right now is getting content for the FUNimation Channel, which license rescues help with since they can be aired quite rapidly and DVD's put out in short order.
Less iffy than you might think because I hightly doubt FUNimation will redub anything. That said, should FUNimation license rescue Dragon Destiny from Media Blasters and score Great Guardians, I'm sure they'll get the same VA cast.