Everyone has their own preference for the order in which the list appears. As you have noticed the system doesn't have an option for to display bases in the order in which they are created.
How you work around this is your choice. You could rename the bases such that they are in alphabetical order, or give each base a 2-digit code (as you suggest) or simply number you bases or prefix each with a letter code. The default names given are given a numerical code - I always change mine, many don't make a change at all.
