Feature Request : Better Integration with Instagantt OR Make it your

I’m use instagantt for my company global production planning :
One projects storing 40 tasks with 10 subtasks each.
Since the last update of the Asana API : loading the project in instagantt takes huge amount of time (if not loading at all).

  1. Could Asana modify its API
    2 ) could provide the same features than instagantt ?
    1. could the timeline display take into account the timing taken by subtasks ?