dont know about much about "pupil streaching". as far as i know its used to make the pupil bigger during the extraction procedure so that the implant can be inserted. it does not (that i know of) permanently change your pupil size. i could be wrong.
1.5mm is tiny. for a multifocal design to work it would have to be bigger...
Good luck on intermediate vision. You obvioulsy have a small pupil and are with an experienced doc to check it. With the ReZoom you would just be using the distance portion of the lens and would have to be stretched to 2.3mm to get that 2nd near zone in so you might as well go with a monofocal. They can also go with an argon laser pupiloplasty to enlarge it. With ReStor you will be using the central portion of the optic so you will pretty much be near with some depth of focus maybe due to the small pupil but will suffer on distance. That is why he might stretch the pupil.Maybe just a monofocal with readers would be best.Even Tecnis would not benefit you in dim light if your pupil does not dilate. Need more information on what it does under different lighting conditions.
Please think twice before doing something that may not work well with your eyes. Conventional IOLs can sometimes yield wonderful results. One of my friends had a script similar to yours with mild astigmatism. Before cataract surgery, his best corrected vision had never been better than 20/30. Post-surgery he has 20/20 vision. He only needs reading glasses for very small print; he can read menus and newspapers and use the computer without glasses, and I've seen a demo of each. He doesn't have monovision (although this isn't a bad idea, either), but I suspect that his surgeon must have made one of his eyes a little nearsighted. In any case, he's thrilled with his vision.
You are correct as far as working with lenses from a refractive standpoint can be an art. Pupil stretching can be performed at the time of surgery as well as post-op. It would be used to get the second ring in for the ReZoom and distance for the ReStor. The laser for a monofocal or multifocal would be used for astigmatism or for power correction if over minused. You can also perfrom LRI's for astigmatism. You just have to figure out what you want. A monofocal is going to give you great distance vision and you can wear readers for near. With a small pupil you might even pick up some depth of field for intermediate and he can always shoot for a little different outcome in the second eye based on the refraction of the first eye after three top four weeks post-op.
You have many good questions. The Tecnis is the original and the first. It corrects for corneal aberrations, the B&L for lenticular only. You will not have a full range of foucs. You can go with monovision with a little plus or plano in one eye and a little minus in the other but it can be hard to tolerate and you want to try it with contacts first. I tried it and could not do it. The ReZoom is going to give you great distance and intermediate but you have to get that 2nd zone in to pick up near and would need pupil stretching. The ReStor is going to give you great reading with a small pupil in bright light but not so good in dim light and poor intermediate. You need strecthing to bring in better distance. You have been very thorough. You have to talk to your doc or docs and make a decision and then mentally be postive to work it out. It does not happen over night with multifocals and takes time to adjust which you will have to commit to. Hard call. Doc can also change second eye based with different model based on how you do with the first eye. Yo really have to discuss your occupation or hobbies and deal with expectations. People on this board that have the lenses in their own eye are the best to get feedback from. Good luck!