When you hover the cursor over a hero it tells you their hero level.
Since 2.0, it also tells you what items they have. Unfortunately, since this addition they made the Hero Level Icon MUCH SMALLER.
Now it's very hard to quickly tell their hero level. Sure you can open up the scoreboard to figure it out, or if you have it partially shown you can look through the list of 10 heroes to find it, but this is not as quick.
Quickly finding their hero level is important and was something you could do before 2.0. The difference between a Level 6 and Level 5 enemy Deadwood in your lane (5 and 6 look very similar when in tiny font) is the difference between you getting smashed in the face for a ton of damage or being just fine.
Please make the hero level font bigger again so people with smaller monitors can still read this info.