I got the 22" Plat5, too. And I love it. Have traveled with it and it holds up very well. You have probably read my review of it.

The handle indeed has only one extension level in which it locks. You can tell from the little holes in the tubes. Personally, I find that to be a good height. I'm about 6'. I do like to use the extra handle. The bag becomes almost weightless. It is very easy on the wrist. So for me it is worth it in terms of added weight and used space inside the bag. You will also find that it is relatively easy to pack around the handle. Just lay your underwear and t'shirts flat around the handle filling out the interstices. This way you use up all the available space and create a flat basis for the rest of your packing.

The carry handles are as you say. Since I hardly ever need to carry it, this has no influence for me. They are basically grab handles when I need to lift the bag momentarily. They are not used for long hauls. I only use my Plat5 when I know I can use its great rolling ability. Otherwise I use one of my shoulder bags.

The suiter is not big but a size 42 suit does fit. Also, somebody showed a method where the suit (or shirt) is simply pulled together so that the front sides are overlapping; like wrapping a blanket around your torso. This works very well for jackets and shirts. Give it a try. You should find a link to the method in my original review somewhere. I think it was a thread by carolinelb and the method came from Mike (who goes under another screen name).

I also reserve the suiter only for the jackets. I put shirts in a shirt folder and wrap the pants around the shirt folder in the main compartment. This will have several advantages. Try it out. There is thread here where I posted a general method of how to pack a 22" rollaboard. It's not too far back.

Can't say anything on your fourth point. The bag is wrapped up in the attic and I am too lazy to get it out now. Will look at it next time I use it. All I can say is that I was rather impressed with the build quality.

Till