Dear Torsten,
Thanks for drawing my attention to your essay. You're right that I'm interested in a geometrical explanation of accelerated expansion, and I'm glad that you picked this up from my comment on Sean Gryb's essay, and that it drew your attention to my essay. I see that we have some common interests, and will therefore read your essay with interest. In the meantime, I thought I'd direct you to the discussion thread I opened up on Ken Wharton's page (near yours at the top), because that pretty much outlines how I think a geometric description of the observed expansion rate should be handled.
Anyway, thanks for reading my essay. I'll comment again when I've read and rated yours. I hope you do rate mine as well before tomorrow night (since you've said you found it interesting ;)).
All the best,
Daryl