First thing this will not change any thing in display.

In Form View Options like (always_reload, reload_on_button..) used if this fields have reference with another fields.

Example:

-In mrp module reload_on_button is used

-options='{"reload_on_button": True}

-In Manufacturing Order Form View if you add lines in "Products to Consume" and you click on "Consume Product" Button before save record. options='{"reload_on_button": True} will first reload this record and then call button action. And thus you don't get error of reference.

-"reload_on_button" reload record on button click while "always_reload" is reload record every time you insert data.

Meanwhile this options will help to generate reference when you not saved your record and other field have reference of it.

I hope this will help.