As a fellow 6'+ person, one of the main reasons I stay seated is so that I don't have to stoop below the overhead bins and/or subject my face to the flurry of arms. :p
I thought I'd found the solution to the height + plane drama. I took a load of sleeping pills. Every time I woke up I took more. It got me from NZ to Europe feeling great, until the last 30 mins of the 30ish hour saga. I'd fallen asleep with crossed legs and my upper leg had cut return circulation off (I assume) and had gone red, swollen and painful. Somehow I limped off the plane. I think the strategy is great but DVT stockings are needed to prevent something like death occurring.