I will not enter the whole circle choice to overload you with info, but I’m gonna say I’m one of the few that don’t think ranger 2 is bad.
In fact, ranger is taken mainly for steady aim and barrage, if you go circle 3 you take two tier 2 skills ( Spiral arrow and bounce shot) that will not benefit your DPS that much anyway. This is common in most circle skills of archer tree in general, where you get one/two good skills and a bunch of garbage fillers with leftover points, plus if you go fletcher spiral arrow is pretty redundant with fletcher skill (aka useless) no matter what.
If you want to focus on fletcher, I do like a2>ranger2>fletcher3>hacka or mergen, since you basically give up a filler of scout 1 for +5% steady aim (pretty significant with meltis).
If you want to skip fletcher, you can go in a lot of different direction, but given you are ranger 2 I would especially like
archer 2 > ranger 3 > X (I do like rogue to increase barrage damage, pretty significant given u are ranger 3) > falconer 1 mergen 1 (especially with mergen, that would be my go to build If I would consider mergen for my R8 archer)
Till consider that scout helps a lot for exploration and aggro desink, but I don’t like to take full utility circle on a DPS char (I do kinda play in grp all the time tho and that’s why I overvalue extra steady aim points from ranger 2+, so it’s up to you)
A2Ranger3Sr3 (solmiki/library char) plus a2Ranger2Fletcher3Hacka (hopefull my new main for off meta sweetness) here, just my 2 cents 
ps: sapper2 can also be a sweet archer, but I’m newbie theorycraft wise for it so I’m not giving any suggestion in that direction!