each page you create gets a unique id so there is no way knowing what Ids you need , or even recreate those.
I would go with page blocks and not the sloppy html code. You can make a link page as placehomder and then set all your pages under this (make it root for those pages you like) and then just open a new pages block in the footer that will read all the pages under this link page place holder. no need to read ids or what so ever.
You might need the first time to play with css to get the same effect as in the htmls blocks in the footer but thats no big deal.
HI yes it shows also in url if you have parent/page.html in your SEO
I always use shallow urls so just the page and in the link I use the # . So yes it will show up in breadcrumbs so I name this like the Block title in the blocks at the footer. The link # will get the visitor to homepage
If that is a problem for you , you can always leave them in root, and then in the block at the footer choose fill manually and put aallthe pages you like by hand. It well then be straight forward in breadcrumbs.
I manged to change translation of all footer (but when i approach Customer Service block only headline changes using little textedit icon (when clicked window come up )
but those 3 not able :
About your order
TextEdit Icon appears but when you click it not function.