Kovid --
for the change.
I never thought that checkpoints for each spellcheck correction would be worth it.
I think, however, that this (one before starting spellcheck) will still come in useful, without the steep cost. Much appreciated.
@Phssthpok,
For one, there is no opportunity to do something similar before "a series of find & replaces". The only time the editor knows you are using one is when you actually run a specific S&R.
And S&R is far more flexible, and thus error-prone, than an extremely limited "replace with selected valid word".
So there was never a question of whether or not to checkpoint before global S&R.