Firstly... well done on shipping TablePress. Just the ability to have an edit link below each table has saved tons of support queries from editors trying to work out which table to edit on any given page.
I've noticed that it flushes out the cache created by WP Supercache, which is great... to a point. Flushing the entire cache after just making a single table change seems like a nuclear option. I have a table on my site that are updated every 15 minutes by the Auto-update plugin (again - great work), but flushing the entire cache every time this runs is dragging down the performance of my site.
Some level of table level control, or more granular cache flushing would be a massive improvement