Hi!
I have made a readtable-related pull request long time ago, it was not merged because it was breaking things that worked before.
So I suggest to discuss another approach to SLIME + NAMED-READTABLES cooperation.
Please see the essay here:
https://bitbucket.org/budden/clcon/src/e3c40c555295336a3a13c506cce6a179f9dd8...