I've been leveling up a Deadeye to try Ele Hit - Barrage + Sniper's Mark - Spellslinger. That's right, it's not completely dead, but it's relegated to very dusty niches. Also, not above mockery by GGG.
I believe it was posted in this thread that they were reverting Spellslinger trigger spending mana and no one countermanded it, so I had to look up what actually happened.
Anyway, this is basically Mathil's build from last league. It looked really fun then, it's still fun now. I initially discounted it because Mathil has no problem playing builds that require aiming(SST), and even then, he has some clear whiffs in his highlights. Coming from someone that hates ED Contagion for aiming that slow moving ball and it taking forever to spread if it initially hits a fatty or some non-Contagioned mobs step in the way, but loves Exsanguinate Mines because you can toss the mines in the general vicinity and half the screen dies...this build feels closer to the latter.
If you can't tell, I'm very lazy with targeting, and some of that is absolutely PoE's fault. Most of the time, I can point my barrage in the direction of the pack, a nearby monster would get auto Marked(no namelocking required! not what I was expecting), and projectiles would 95% of time be soon flying all over the screen. Monsters that close to melee range quickly would mess this up sometimes. You'd curse in the middle or back and your initial stream of projectiles just couldn't get to the marked target.
Either way, not a damper on the build like I was expecting. 4-6 projectiles split 7 times then chained 2-3 times is not a common playstyle. If you've played Lancing Steel with Sniper's Mark, very similar.
I really wish there was better itemization support for wands in PoE. I was trying to create a unified twink PoB since the trigger changes killed my caster version. Attack one got hit too(Hollow Palm), but I suspect it's fine. If I wanted to spellsling Sniper's Mark while using an actual attack skill, there isn't much in the way of wands that fit that.