What you are basically doing is pointing out the current flaws of the game. i KNOW what they are, thats why i suggested these things in the first place. The reason im not playing now is i ran into said problem and got frustrated, so here i am suggesting how to fix it using a solution that makes sense. in answer to your concerns:
A stretcher is very simple, rectangle of cloth, 2 wooden poles. That its, not in use? roll it up. If you for some reason lacked cloth you could just use a plank, comfort is not an issue, only speed.
If you roll the stretcher up it becomes a bit shorter than a spear. Since this is meant for dwarves it would be even smaller than normal. You could carry this with you or hang them on a wall like you would a fire extinguisher. You should have at the very least, 2 per screens worth of map.
Notice how i said the computer gives the job to the nearest stretcher, and the nearest people with the right job? If the response is slow that was due to your poor planning. If the only other stretcher bearer was 3 hours away on the other side of the fortress, chances are you only have 2 of them. In any case, all dwarves start with the job enabled.
You do not need to use trained soldiers for this most of the time because evacuation will not take place unless the wounded dwarf has been removed some distance away from the fight.
If you DO use soldiers it is because the bearers have a good chance of getting shot, in which case armour is needed. But even then they will not take the dwarf all the way to the hospital, just until they can switch off to some civilans who will then take the wounded the rest of the way.
If given such an important task a dwarf would never drop the stretcher to go off and get a drink... i mean would YOU? Plus a soldier is disciplined enough to suck it up and he should be carrying water in any case.
In the future, combat will be a lot more organized. Toady talks about army level battles. If we cant micromanage all the way down to squad level combat then either it will end up a gigantic mess. OR the computer will explode from trying to decide everything on its own.
One thing we are sorely lacking, is dwarves temporarily halting tasks in order to accomplish shorter but far more important tasks. If you tell the dwarves to hit a lever, the job should be done by the nearest dwarf, period. If he has a job, well too bad! that half done crossbow can wait. The job gets suspended, the dwarf runs to the lever and pulls it as fast as he can. The same thing would apply to stretcher bearing, the nearest dwarves would simply stop or drop what they are doing to come help.
What instead happens now is the game picks the nearest dwarf without a job and gives him the task. If this dwarf is halfway across your fortress at the time, your gate might close too late to shut the enemy out.
So back to your doom scenario:
1. Troll appears in the middle of your dining room for no reason. And starts wacking patrons.
2. The first person responding *should* be a member of your fortress guard, you do have them right? So lets say he bursts in and sees the troll, blowing his horn (or shouting, whatever) for help.
3. The noise reaches axedwarf squad #1 who happens to be around the corner. The squad includes a medic.
4. The guardsman attacks the troll, meanwhile the rest of the patrons run the hell away, leaving 2 wounded bleeding on the floor.
5. The soldiers arrive and pile onto the troll. Since his help is not needed the medic drags the wounded outside.
6. While the medic is patching up the wounded, he calls for stretchers.
7. the two nearest stretchers happen to be down the hallway. There happen to be 3 dwarves standing around for no reason. They are joined by the fortress guard mentioned earlier because the soldiers can more than handle the dangerous troll and they have better armour.
8. 2 of the dwarves start dragging the wounded in the direction of the hospital. The point is to get them there asap. Meanwhile the other dwarf and the guard run to retrieve the stretchers. Once they meet up, they load the wounded into the stretcher and off they go.
9. Meanwhile the medic joins the soldiers again and treats a few broken bones. The troll lies dead.
Now, this would seem like a lot of extra effort. but keep in mind that injuries in the future will be far more deadly. You can easily bleed out at a rather scary rate from relatively minor wounds. Most wounds taken from a sword will not simply stop bleeding in a minute or so, it will keep gushing until you or someone else has the time to apply pressure to the area.
As combat evolves in DF it can only get even more deadly, we need ways to deal with that. Thus the point of this whole thread.