Allen, all other things being equal, higher velcro to velcro bond strength cannot be a bad thing.
The velcro to velcro bond, and the velcro fabric strength, are both quite weak at their best case - apparently only 5-8psi, and 40-150lbs. That should not be hard to exceed with adhesive.
But if we do need sewing, we know to use as little as possible in a way that disturbs the hook area as little as possible. That implies some distinctive sewing patterns.
>>With longer sections of Velcro you are going to get more holding power and at some point will exceed the strength of the Velcro fabric.<<
mmmm . . . the psi will be the same with length.
More wraps will give you more holding power, primarily because the load is cut (as in a tackle). That does not increase the psi.
There is a secondarily compression effect (about half of the 'tackle effect') that does increase the psi, but that extra force appears to be transferred to the webbing by the compression and does not require a lot of bond strength to accomplish that transfer. (this all assumes low stretch webbing).
At least that is how I interpret my findings so far.