Kevin and DiapDealer, thank you for sharing these personal and ethical information (post #25, 26) which show your dedication to the community: you are men of honor!
(Now, I feel so much selfish and lazy
).
The general idea that I get from the mentioned page (editing-epubs-post-sigil), is that some "pro" have not enough fair-play for intervene here to propose solutions, ideas or requests to improve Sigil. A bit like if they preferred depend on the goodwill of the big players (Adobe and other). This seems rather "amateur" like attitude to me.
Anyway, I would stress again two things: 1) I like Sigil very much and uses it nearly every day; 2) I firmly believe that Sigil must stay alive, so thanks again for doing so.