thread moved to class specific discussion where you should expect more accurate answers from fellow othell players.
i'd say enhance for str, because othell damages are linked to str. dex gives you atk speed (you can have more than 1400 with like me enhance set, and -6 dex on dyes) so useless. dex gives you crit rate (you have ~95% crit rate when you'r in back of your targets ) so usefull only when hiting from face...
that's the tauti update... and we don't have enough infos, crit = dex or str+dex? we have to wait a lot of time for tauti patch... yes, now str is the way.