I think the answer to that question is in what you think about my explanation of the point of bands. However, I would say, not yet.
What has been finally working for me and that is not deadlifting in the very low 1-2 range every week, trying to get stronger that way. That is fine exploiting gained strength, ramping up to going and doing a single at a meet and so forth, but the problem for me with the lower rep range is that it simply requires so much initial concentration and committment that even a slight bit of bad back angle, poor prep, lack of committment, heat, etc and you're not going to doing as well as you did last week and you're going to be discouraged.
Trying to iteratively ramp up using 1 rep sets is difficult. Whereas if you back it off a bit and shoot for 5-6 reps, you can warm into a set, as opposed to having to be very much 100% on it from the outset. So much of this is mental, so adding an extra rep on top of the 4 you got last week, to get 5 is far more likely than managing to get it all right on the +2.5kg (or whatever) you're going for with a single.
More than anything, with deadlifts, you have to do it every week and you have to red face it every single time. If you want to get stronger above a certain value it will undoubtably be the toughest lift you do every week.
Groinkypoo might laugh at Powerlifters but when it comes to deadlifting and squatting, they prove that twinks can get way stronger than bodybuilders would have you believe. I think you should check out your local powerlifting meet and reevaluate what you think you might be capable of. It might just be you're training wrong.