So I had 1 full season on them and then 2 seasons where I didn't ski much at all (I think 12-15 days and then only 3 days total last season), so this would be season 4. They definitely have not packed out much in the forefoot area though, or anywhere else that is obvious to me. From others I know who have this boot, I've heard the liners are really good and don't really do much packing out, seems to match my experience so far. In fact I'd like it to pack out a tiny bit more in the forefoot on my right foot because I always have to do some 6th toe area stretching with new boots and I've wondered if I should do a tiny bit more or not occassionally when it feels too snug there. Throughout the ski day my foot usually settles in and then I fear if I stretch more in that spot it may be too much so I haven't. All this to say, I don't believe that there is additional space that my foot is trying to fill now.
Though I wonder if something has changed that I can't identify to be just now experiencing more issues than the previous few years.. Last year didn't really count since I barely got out and all, but I'd have thought that year one should have brought this stuff to light if it was just the setup. That's why I also wonder if it's just some sort of regression from less skiing in recent time and a lesson might help that. Could also be that I'm not as strong as I was previously to overcome whatever issue has always been there..
You sound as though you've had a similiar experience with heel lifts!
One of the things to realize with heel lifts is they don't just do one thing to you. They change how your mass is balanced on the skis and modify a bunch of stuff.
What I realized when playing around was how much my psychological state affected whether I was for or aft regardless of lifts. At one point I ended up in slush bumps and could not get forward to save my life, I had just added ramp delta and though that was the problem. Now fast forward two years (and a lot of experimentation) and I realize the problem wasn't too much forward lean, it was fear. I am back in that exact same setup and am skiing beautifully.
Last month I posted about spending time carpet skiing and really laying forward on my skis and letting my boots support me (like a jumper) and it made me realize how my stance and aft problems had been affected by not trusting my equipment to support me.
There are definitely those who need lifts and those for whom lifts are a disaster, but don't underestimate how much you (and your crazy brain) are responsible for your stance.
P.S. The other thing that changed was stronger knees, I can now hold myself forward so am not stuck back so much.