Hi!

At the moment, I'm almost in the same situation, except that i got to make
a hierarchical grid, so far i've found a solution but it's kind of limited.
In case you find a solution for n number of replies and levels, could you
share it here on the forum? Probably, next i'll post i question similar to
yours. In case you want to know about my solution, i will gladly post my answer.

Regards