I think they should sub-license it out to Shout! Factory, it would be a good fit now that they are also releasing Fantasy Island (another Spelling show). I doubt that they would do a complete series set but it is puzzling why they have not released any other seasons- did the first two seasons not sell very well?!
I'm all for Shout! getting on board and setting sail with season 3, or I'd buy a complete series from someone to do it like Time Life has with their great complete series sets. If the previous two seasons of Love Boat didn't sell that well, it might have something to do with the split season sets. It gets pretty expensive that way, which could turn off some buyers. That said, it's hard to imagine that the other series that CBS has restarted, like Dynasty, Bonanza, and Gunsmoke have sold so much better than what Love Boat might sell that those series are continuing deep into later seasons, and Love Boat gets nothing? It's hard to say. I'm hoping that the reason we've had no news on Love Boat is that something like a complete set is in the works. There are a lot of seasons unreleased, and restarting it a half season at a time would take forever (and likely never) to reach the end.