That leather looks to be as dry as parchment paper. Clean and feed it a good conditioner first. Repair any straps can be done by a good leather/shoe repairman. Before you have the inside relined I would use it to see if the present setup works for you or if you need the dividers moved. You might decide to keep it as it is and just clean up the lining material a bit. Relining a case can be done later.