Aspyr already know my views on this subject. In my own humble opinion, a list of a couple of dozen email addresses, even if you get that many, is not going to change Aspyr's marketing direction. In fact, it may be counter-productive.
From a purely selfish point of view, I don't play Civ4. If I ever want to, I already have Civ4 Complete for Windows and can run it in Parallels. It is fully compatible with all the mods, and with the software used by the vast majority of players out there.
With my CFC GOTM hat on, a Mac BtS without the ability to run it with a full HoF Mod would be just another headache I can live without. I already have to build Mac-specific saves for every Civ4 vanilla and Warlords game we run; this would add BtS games to that workload.
From the perspective of showing support for the Mac community here, I guess I might sign up as a local gesture of solidarity. But I don't sign blank cheques. Where's the bit that normally begins, "We the undersigned .....", and goes on to enumerate what you want from them?