Its all on the same subject so don't worry.
Actually I was thinking of making ALL connections load after the initial page load, making it no slower than your site naturally is. Once they are loaded, they are cached, and next one is hard-wired for however long your cache lasts.
I never mentioned it - but you are limited to 10 yes. Then there are 5 spots open for the "promoted keyword" assuming they are not already in your network. So 15 in all. Pretty crazy huh
Hub sites will make that easier.
edit - misspelling