So, with a little code nipping from related Blogger templates, it seems that comments are again available on the main page. Let me know if something seems broken somewhere else as a result of my limited hacking abilities.
Also - I'd love feedback on the Blogger comments system. I'm considering Haloscan as well - but if Bloggers comments suit you readers, I'll keep it since then I'll have the Blogger superstars to back me up.
As ever - thanks for your patience during this drawn-out process . . . .