One nice auto attack build I used involves Saint Omaku's Mercy/Veilpiercer. These weapons have an upgrade that gives you a 50% chance to ignore recovery when you crit. You can stack +crit effects and accuracy to get a very high crit rate. With ranger's driving flight you'll basically attack twice, so you will have a very high chance to get to ignore recovery. I like multiclassing with devoted for this (intuitive adds hit to crit and devoted increases crit damage).
Its not unreasonable to have >75% chance to crit, which would mean that you have a 60% chance to ignore recovery entirely, and at 100% chance to crit you'd ignore recovery 75% of the time. Against larger groups of enemies you can also switch to frostseeker.
It doesnt require a lot of active ability usage, although you probably want to mark at the start and accurate wounding shot would be preferred over auto-attacking. But these things are optional.
