You can tell very little from one game, nevermind game one...but there are causes for concern, and they are the same causes for concern that people were vocal about in the off-season.
Little to no inside game. Chris Bosh is NOT an inside force and the Heat basically have a bunch of bodies on the interior - plus, Bosh playing 15 feet outside gives you little second chance points. Udonis is a nice role player, but he can not be your best inside body. The Celtics with Perkins, Garnett, Shaquille O'Neal, Jermaine O'Neal, and Big Baby Davis come playoff time will give the Heat some serious problems. They gave them a lot of problems last night (buckets came EASY) and while we'll use the excuse that it was only Game 1 for the Heat, it was Game 1 for the Celtics too. The Lakers with Bynum, Gasol, and Odom will also be a problem for the Heat. This we knew before hand, and this we know afterward.
Carlos Arroyo starting at the point is a problem. The Heat need to start a shooter or defender at the point and let LeBron and Wade do the handling. Start Chalmers or House.
The team needs Mike Miller. You can't be relying on James Jones as much as they did last night. He is good for 2-3 buckets a game, but you need Miller there to get you that 12-15 in a game against the Celtics.
With that said, if LeBron and DWade are ever on fire at the same time, every team will lose that is put in front of them. Too much fire power...they'll score at will. Wouldn't shock me if you see Wade and James score 30-40 a piece in a few games this year.
No overreactions...just a lot of thoughts that coincide with the issues many thought prior to Game 1.