I just received my shuttle prize from Joanne at Glimakra! YA! I was planning to ask for one of these for Christmas, so now I can ask for something else. : ' ) These are wonderfull shuttles and I'm thankful to have it!
1) A way to keep warps spaced evenly at the top would be a huge improvement.
Here is a suggestion: Go to the hardware store and buy a spring - the kind used on old screen doors. Mount this on your loom at the top beam, side to side. Use screws to attach it to the loom frame at each side. When you are warping, lay the warp threads in the stretched
spring in a way that equalizes the distance between warp threads.
Alternately, Louet sells an aftermarket raddle that the threads lay in as you warp. You could just get one of these at the right size and mount it. The spring would be less expensive, but you'd have to fuss with it a little and maybe also mount a side to side board for the spring to lay against. You'd also have to get the correct length spring for your use. It should be long enough to reach side to side as it is stretched a little bit to make room to lay in the threads.