Sounds good, I understand you cannot implement all features at once.  But, please, consider adding the chmod functionality to DropBox too.

When I change permissions or edit a file in one Mac the file permissions are correctly propagated via DropBox to the other Macs.  It would be very nice if Textastic would also store internally the original file permissions (no need to show those in iOS) and restored them when reuploading the files to their original sources via DropBox.

in spite of not having a shell environment in iOS, it would be very useful to be able to maintain and edit a remote shell environment.  I.e., I can edit all my cron jobs on multiple computers with Textastic right now, except that they cease to be executable.

As a workaround, I have to schedule a job (that I never edit with Textastic) to set the executable bit on all the remaining shell scripts (that I do edit with Textastic) every number of minutes :-)