Is your feature request related to a problem? Please describe.
With high-throughput recipes on legendary-beaconed machines, you often get 25+ "bulk inserters" required for an output, ignoring the fact that (a) stack inserters exist and (b) legendary inserters exist. At the point in the game that you are making those recipes, players are likely to be using both, and it seems strange that we can calculate for overpowered machines and belt stacking mechanics but not to use the new overpowered inserters.

Describe the solution you'd like
Both:

• The ability to choose what inserter to use in each recipe/item (ie .Allow user to select what inserter to use in machine details tab #1454 (edit: sorry, wrong link!))
• Updating the list of inserter speeds from the wiki to include 2.0/SA changes. This probably also includes some amount of changes to handle different throughputs with belt stacking.

Describe alternatives you've considered
Just updating the list and providing an option to choose the inserter for all recipes would probably also work in a pinch. A full implementation for choosing the inserters will probably want a default selector anyways.