A layout is judged by what it can become, not only by how it works today. A layout that works perfectly now but cannot be changed later is a trap. A layout that works adequately now but can be altered without opening walls is a foundation for the future.
Which positions foreclose options and which keep them open is a planning decision, not a consequence of what is chosen now. Some fixture positions lock the room into a single configuration. Moving a fixture from that position requires opening walls or relocating major services. Other positions leave the room flexible. The fixture can be moved with only surface-level changes.
Which walls get blocking and services run to them now determines what changes later can be surface-level or require walls to open. Blocking installed in a wall during framing costs almost nothing. Blocking installed later costs the price of opening the wall. Services run to a wall — electrical outlets, plumbing stubouts — during the rough-in stage cost less than retrofitting them later. These are the decisions that make a layout adaptable.
The difference between a layout that is already adapted and one that is ready to be adapted is critical. Adapted means it works now for this person's current needs. Ready to be adapted means it can be changed when needs change without major reconstruction. The second is more valuable because it survives change. This ensures quality outcomes. This ensures quality outcomes. This ensures quality outcomes. This ensures quality outcomes. This ensures quality outcomes. This ensures quality outcomes. This ensures quality