Hi Maggior- Yup, I think that sums up the whole definition of a band that's "tight". When a band is loose EVERYONE can hear it - musicians and otherwise. Music is defined as : the scientific study of TIME and sound. If you don't honor the time side of those elements - the sound side will suffer horribly.
All professional recording acts are "tight" - otherwise they wouldn't be worth recording .... but the band I use as my personal definition as the ultimate in "tight" .... is Huey Lewis and the News. Not my favorite band or even my favorite style but man.... if you listen closely they have some amazing playing on pretty complex arrangements. A perfect paradigm for timing and arrangement excellence.
Continued success on your project maggior - the big day is looming - TIME flys ... :)