you can still download nearly 50% more a day if you're carful - remember the limit is only in place for 8 hours a day and still lets you download at 5mb/s
A few calculations tell me that at
5mb/s you could theoretically get 54GB a day, or 2.3GB an hour
10mb/s you could theoretically get 108GB a day, or 4.5GB an hour
20mb/s you could theoretically get 216GB a day, or 9GB an hour
With this throttling you could theoretically get 162GB+ a day*, I make that about a 55% increase on the old 10mb speeds - so hardly "no improvement".
I personally don't know anyone who needs that much a day for normal usage, I personally would prefer bandwidth throttling with the extra speed "off peak" ensuring I get a decent connection for gaming etc in the evening than any of the alternatives (bandwidth caps, very poor connection due to the people that cannot hold off downloading the latest DVD's for a few hours/limit their speeds voluntarily).
*If you play it you could probably squeeze another 3-4gb out of it