I grew up in Chapel Hill, my folks still live there and I have to say it is a fantastic place to live. Close to great schools, amenities, shops etc.
Some might think it's a little too sleepy, but I think that is one of it's charms. I don't believe there has been an enormous amount of growth in the suburb for years (I stand corrected - API says 10% increase in median in 12 months past, but 5 year is 2.4%) as it is pretty much completely established, with the exception of a few little developments (one on Chapel Hill road from memory), but I'd have to think both Kenmore and Chapel Hill will benefit from Legacy Way.
The only thing I'd say missing is access to rail. The closest is Indooroopilly station, which can be a massive PITA to get to in the morning as you have to get across Moggill Road.
However, bus transport to the city isn't AWFUL, and I suspect will improve enormously once Legacy Way is completed.
Cheers,