My backpack has a roll top, which I really like, but the closure is velcro, which I detest. I appreciate being able to adjust the pack to the volume of what's inside, especially since that changes over the course of a trip as I eat up the food. But the velcro closure keeps snagging Items going in and out of the pack. I've spent some thought on how to replace the velcro dry-bag style closure with a similar closure not having velcro, but never actually got to the point of doing something about it. My latest thought is to get a safety razor and shave off the sticky side.

Pack lids are the first thing I want to remove to make the pack lighter. And no closure is completely waterproof.

My pack has outside mesh pockets, big enough that I very rarely need to access the pack interior during the day.

I believe this thread demonstrates how each us has different ideas of how we want our packs to look. So the answer to the OP's question is YMMV and HYOH!