It'd be wonderful to have your extended cuts in 1080p - I was planning on getting the UE Blu-Rays of all the films (skipping out on the regular editions) to get the extended cuts in high-def, and if I had high-quality 1080p MKVs of your extended cuts I'd be set on that and can just get the regular Blu-Rays of the theatrical cuts.
Just a suggestion. ;-)