I'd be all over the hard tank system if they can keep it below the deck. eating up the rear storage, I'd still rather have the bags.
I haven't seen the maliview system, but I really don't see the benefit to seeing how full the tanks/bags are. I would think either you are a beginner and don't need them, or have advanced enough to want the tanks/bags full, and a screen to watch your stuff fill just detracts from conversing with your peeps on the boat.
I have read about problems, especially with the mastercraft system to add additional bags or replace what is there with a timed system. at least ours is one of the easiest to add extra weight.

personally, I think the flooded tanks under the floor that fill/drain with doors is the future. MB went that route this year and I would think from a quick fill, virtually no parts to replace and ease to use, it's the best way to go.