I like Rowlett. Of course I do live here, so I may be slightly biased.
The DART train station is the most notable addition in the last couple of months. DART extended the Blue Line out to Rowlett to the old Park n Ride. Now, you can get to downtown Dallas or points in between easily and without having to find parking.
Blue Line also continues on down to Lancaster Road near the VA Hospital. You can also connect to the other parts of the train system, which is the largest in America, including the TRE, DFW airport and The T in Fort Worth.
The Bush Turnpike was completed through Rowlett from the Firewheel area down to I-30. This does improve connectivity and getting to Plano and the far far north is now pretty fast and easy, albeit pricey.
Wylie is just north and east from Rowlett, which makes Bush attractive but the DART would be less convenient. Sachse also is north from Rowlett and enjoys the same school system as Rowlett.
The schools here and in Sachse are quite good. Life is good in the suburbs, with shopping and things to do. Rockwall's Harbor is just over the bridge from Rowlett and we like it a lot.