well, if there is min STR for best weapons really high, then there is no problem with dex being option for all melee attacks as for ranged as normal.
IE: Bows:
d4, STR 4
d6, STR 8
d8, STR 10
d10, STR 14
d12, STR 18
2d6, STR 20
(if you want, you can make that Small characters count their STR 4...