I agree that some modern lines have really kinda made me lose interest in getting super creative with stupid deep line setups. It's quite easy to get a Big Game Depthfinder or equivalent down to 30' or more.
At least in regards to Tuna that's plenty for me. There are probably times when getting deeper quicker could be helpful, but for me anyway I'm just not super interested in sitting there deep soaking lines for fish that don't want to come up. I'm just not going to spend time doing it and would rather go find fish that want to come up and play. Of course I'm also running a charter so I can't exactly justify spending a bunch of time not catching fish. If I was just out there fishing for fun I may dedicate more time to it. One of the biggest factors with albacore fishing is that its expensive and you only have so much time out there. Whether on a charter or on your own, it's a lot of financial investment which makes it harder to justify experimenting a ton. There is definitely a time and place for super deep out there, but I just find one of the fast sinking integrated heads is plenty for my needs 99% of the time. I think I just lack the patience needed to really sit there and soak flies as deep as possible. I'd rather just get up and go looking for fish that want to play shallower.
I'm finally coming around to this thinking, but I still love the sense of "what might happen" if I get a fly to jig depths. If I was running a charter though, I'd definitely be shopping for players.