It seems to me that STR and SPR are easily the most valuable stats to an archer.
People
severely underestimate the value of free-stat STR. If you go the route of 25 SPR, 50 STR by level 60, that's
Fifty free damage. Free-stat strength and intelligence are not mitigated by mob defense, either. No matter what you're fighting, two equal archers, one with 0 STR and one with 50 STR the difference will be the same every time - 50 damage per hit.
That may not sound like a lot, but especially for bow users, who rely on normal bow attacks to some degree, it's a rather nice boost. If you're dealing 150 damage with a normal attack, it's now 200 damage. On the other hand, for X-Bow users, who generally will spam skills non-stop, your percentage increase will be a good deal less, due to the higher
base damage of the x-bow in conjunction with spamming skills that also do more damage.
In the end, it seems to me that it is beneficial even for an x-bow user, but much more beneficial to a regular bow user to add STR. It's really a judgement call, though.
I haven't talked to many high levels (My archer is a wee level 21 right now) that say DEX helps much. Going past 25 SPR loses it's appeal, obviously. INT is out. END can help, but ideally you have a fighter there tanking for you. That leaves STR and SPR. The two ideal stats for an archer, in my relatively informed, yet completely biased and possibly unfounded opinion.
