str. int. dex. in sl. whats the point?

[roguedubb]

but if you are not a spammy engie, you could well do with more dps (dex)

This is actually incorrect. An Engineer will get the biggest DPS boost from INT. DEX will improve CRIT by about 2 points compare to INT (@lvl30), at the cost of all the other benefits INT provides to an Engineer. STR will improve health by an equally lame margin of about ~20 (@lvl30), but the extra HIT it provides could justify putting points into it.

The easiest way to allocate your stats is to stick to your prime stat. There are reasons to allocate otherwise, such as an Engineer who wants to get 100 HIT who may need to allocate some points in to STR.