Personally do not like much about it.
1. It adds cash and freeplay balances together. Dumb. They are not the same thing. When making a bet I need to manually check how much actual cash I have.
2. After placing a wager you don't get a ticket right there and have to manually close the confirmation thing that pops up to make another bet.
3. The fonts and spacing are way too large. You can only see a few games per screen. The old BOL you could see 10-15 games all concisely put together. Way too much white space.
4. After you get logged out, it has this fast rotating side-to-side animation which is annoying as hell.
Positives:
The My Account area is more pleasant than before, showing pending rollover, pending bets, etc. Before, many bets would show up in a really unclear way, you could hardly tell what the wager was sometimes on various props or matchups and so on. Now it's much cleaner and clearer.
Unclear:
Unclear whether the new site still screws you on line changes like the old one does (i.e. tells you when line has moved against you, but doesn't tell you when line has moved in your favor).