Here is a short term workaround
This requires that you have you own website (sorry i wont post mine).
1. Upload an html to your server with the following data
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<base href="http://www.apple.com/library/test/success.html"><div style="background:#fff;border:1px solid #999;margin:-1px -1px 0;padding:0;"><div style="background:#ddd;border:1px solid #999;color:#000;font:13px arial,sans-serif;font-weight:normal;margin:12px;padding:8px;text-align:left">This is Google s cache of <a href="http://www.apple.com/library/test/success.html" style="text-decoration:underline;color:#00c">http://www.apple.com/library/test/success.html</a>. It is a snapshot of the page as it appeared on Sep 8, 2012 05:24:26 GMT. The <a href="http://www.apple.com/library/test/success.html" style="text-decoration:underline;color:#00c">current page</a> could have changed in the meantime. <a href="http://support.google.com/websearch/bin/answer.py?hl=en&p=cached&answer=1687222" style="text-decoration:underline;color:#00c">Learn more</a><br>Tip: To quickly find your search term on this page, press <b>Ctrl+F</b> or <b>⌘-F</b> (Mac) and use the find bar.<br><br><div style="float:right"><a href="http://webcache.googleusercontent.com/search?q=cache:UGNXuiJ_uIYJ:www.apple.com/library/test/success.html&hl=en&client=safari&gl=us&prmd=imvns&strip=1" style="text-decoration:underline;color:#00c">Text-only version</a></div>
<div> </div></div></div><div style="position:relative">
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<TITLE>Success</TITLE>
</HEAD>
<BODY>
Success
</BODY>
</HTML>
2. Now attempt to connect to your wifi network (it will fail)
3. Press the blue arrow in wifi settings to open up the wifi settings for that router
4. under DNS, enter the URL for for the page you uploaded (e.g.
http://www.yourdomain.com/success.html
5. Now try connecting to your network again
6. THe wifi icon should persist
7. Press the blue arrow and remove the DNS entry (set it to nothing or 8.8.8.8)
I am not sure how often you have to do this, but at least this will let you all do your icloud backups.