Explicitly keep Vim mappings for scrolling
Exchange "word" and "Word" movements
Remove one duplicate mapping
Use 'a' instead of 'aa' for "redo"
Exchange 's' and 'd'
Experiment with keys for 'I' and 'A'
Add 'h' to go to the opposite end in Visual mode
Experiment with keys for 'y', 'd', 'c', and such
Use same keys to scroll in Visual as in Normal
Map some single keys to <Nop>
Experiment with mappings of <c> and <v>
Abandon the rule the a single key does not modify

Abandon the rule that "in the normal mode, do not allow a single stroke of any simple key to modify the text".
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