Is this just placing them vertically, nothing else?
I currently use the Tree Style Tab extension and really like how it handles sub-tabs and allows collapsing the tree nodes. If I can't have that this is probably not directly useful to me unless extensions can add that functionality.
I do have some good news on the dotted letters being friends though: ij is considered a single letter in Dutch. Go ahead, try selecting just one of them there.
The same is of course true for the upper-case variant IJ, but that form unfortunately leaves out the dots.