"Wall of subs" distributed placement, anyone?

I am ready to try something else in place of my pair of corner placed 18" subs.

I am thinking about evenly distributed, wall-of-subs, shallow sealed boxes.
In other words, on the front wall behind speakers. A lot of 18" sealed subs, wall to wall and floor to ceiling. Perhaps, evenly spaced, covering most of the front wall.

Maybe the "Bag End" style sealed subs and infra processing, but that's going into details...

"The wall of subs"
Is this a good idea for DIY project? It seems not too complex. Just a bunch of 18" sealed shallow subs + dsp + hefty amps.
Does this work for good quality bass and even bass room coverage? Acoustically speaking, any drawbacks here?
Are there articles on this topology / analysis?
How will it sound?

I was thinking about augmenting the bass from some full range speakers by using subs in the speaker stands, and perhaps adding two more subs, this would result in something very much like the "front back quartal", looking at the results, this could be promising.
There's some videos on YouTube about people making walls of subs, and driving them with LOTS of power. Since I'm currently listening to two 6 inch drivers driven by 3 watts, I'd love to "feel" what such a system would sound like.
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A complete wall of subs eliminates modal participation to all but one room dimension (plus normal disturbances like furniture). This also reduces modal diversity, and you still want other subs present in other parts of the room.
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Are you making this in individual cabinets because it is not a permanent installation?
If it is permanent, you can save a whole lot of wood and time by making one large cabinet.
The disadvantage being you need access to the rear of the wall for wiring and future WHY.
I was thinking of making individual cabinets. Obvious ease of installation but also modularity in case I do move.
I am unable to place subs around the room, except the front wall area. So with that in mind, I can have more than two subs on the front wall. Actually the front wall is totally available. So anything that will bring the highest performance and most possible even coverage in the room, using only the front wall.

AllenB, what does this mean "A complete wall of subs eliminates modal participation to all but one room dimension " ?
Ah, ok. To me, that seems like a very good result, nearly 2/3 of the main standing waves problem is solved. This leaves work for effective absorption on the rear wall, such as a good bass trap, or maybe an electronic bass trap.

Based on this, the wall of subs is good, yeah?
My issue with subwoofer placement is I am not allowed to put them at the side walls, or in the central part of the room.

But I can possibly put a subwoofer or two (electronic bass trap) somewhere along the rear wall, preferably away from the door area, meaning in the corners of the rear wall.

But I can definitely install some acoustic absorption if it’s not too thick. Once again, thinking about corner bass traps or tube traps.

AllenB, thanks for your explanation! I believe the wall of subs is easily done in my situation. I have wood and I have tools and I can build a bunch of shallow subs to cover the front wall.

If that doesn’t sound like fun to you guys, I don’t know what is :)
If you're thinking about doing something like that, have a look at "Double Bass Arrays"...
Brian, I am not grasping one nuance of the DBA.

Is the cancellation happening evenly and properly at all listening locations in the room, or just one optimal area?

Say, I am sitting in the couch towards the back wall, will the bass still sound proper or will it be weird with artifacts?

I did not see that point addressed in the Wikipedia article on DBA