Originally Posted by
Airmann
For ATC your current level while in a block is irrelevant. They need to know the block levels as you have full authority to climb and descend as you please within it with no requirement to inform them. They need to keep all other traffic clear of the entire block.
Agreed, the important information for them is the limits of you clearance. Stating your current altitude doesn't really add anything useful and might foster a misunderstanding.