Is this good practice ? (blocks in a sketch)

I'm starting to use blocks in my models more, and oneparticular block I created is a V-notch. Its basically a trianglewith equal sides, .120". I use this on various parts of asheetmetal part for alignment reasons.

If I insert multiple instances of this block, and do not explodethem, is this good practice? Its hard to tell if the blocks arefully constrained, since the block entities are grey. The only wayto tell if the blocks are constrained is to look at the sketch inthe feature tree. I try to constrain the blocks until I get rid ofthe ( - ).

Is it good (or ok) practice to do this?SolidworksParts And Features