OK, looks like what I did blog a few hours ago is obsolete now.
Asa Dotzler points out that the word of the Firefox marketing manager and a MoFo employee aren't worth as much as I'd like:
"The upgrade path for the Mozilla Suite is Firefox. This was decided years ago and has not changed."
In this case, I'd rather leave those people with a scarily insecure Mozilla 1.x with their suite than to work on Firefox-only marketing.
It would have been nice to give those people a real choice. But it seems the time is not ready for giving them such a choice.
"The mission of the Mozilla project is to preserve choice and innovation on the Internet."
How bitter this can sound in a world where Mozilla doesn't even want to give people the choice between software created within the Mozilla family. I had a quite high opinion of Asa at times, but such statements don't fit with that. I may have to re-think this one.