That was indeed idea that appealed to me, thats why I tried that 64bit xz/7z in the past, instead of internal LZMA. I loved 64bit idea. But, it wasnt useful, it was slower, used more memory and did not gave me much better ratio. I think internal LZMA of FA is better than people give it credit for. I think they underestimate it because its only 32bit but I would not be surprised if Bulat applied his own extra tricks on it.
Btw believe or not but not long ago I srep+fa:m5 one ~360mb game. Then I used only -m5 with internal rep but everything else same. For some reason, the one with srep got smaller. Not by much but still, and it wasnt even m5f, I only used m3f. Go figure...
As for masked compressor, I know about it I saw the page before. Looks great but I dont see much point, is it replicating what FA with GUI already have? Or is there anything it can do that FA cant in terms of better compression?(btw I dont like game installers, I like to archive into single archive format)
PS:(I was PM'd again regarding RAZOR Compressor. I know about it and tried it before. Back then when I tried it was extremely slow and only marginal gain but, later I will update post here to add it to that benchmark for completion, so stay sharp ^_^.)