1: Are you using version 1.10? If so you can tap-hold, then hit Select->Select Siblings, to select all the items in the current folder. You can then delete, copy, whatever, all the files in the folder. I am also considering a second Multi-Select mode, where dragging will select items. You could then switch back to the "normal" Multi-Select mode to drag / drop the items you selected.
2: I'll consider some quick-navigation shortcuts.
3: That is absolutely a planned feature, and has been before version 1.0 was even released.
4: That is a DEXplor bug with non-english Pocket PCs. It has already been fixed in the current beta. As a temporary work-around, you can create the following directory on your Pocket PC and DEXplor will be able to save settings properly:
\Program Files\DEXplor\
5: I am certainly considering multilingual support for a future release. Thanks for the offer, and I will consult with you on that in the not-so-distant future!
Thanks for the comments and suggestions!
Dan East