I personally do not feel Feeble, Ensnare or Sprint will help you much
What to do with leftover SP? Your skills in scout tree are pretty much Eve isk all there as mentioned for both pvp/pvm.
So when you get abundant SP now at 8x+, you may go back to Archer Tree to invest/max Pvp-Intended skills like Fainting Pierce and Brandish Kick. I personally do not feel Feeble, Ensnare or Sprint will help you much.
Feeble: Face off with a melee char or Guardian; to actually be in that range to cast Feeble on them means you are way too close to them, and you prolly be paralyzed/stunned/dead already before you can even press the “Feeble” command.
Ensnare: To reduce a Rohan player 30% of his movement for 7 sec upon maxing might work in 1 on 1 situation for a quick getaway/retreat but wont help much in crowded tight situation.
And it’s not like 30% is a lot when Scout aint a very much mobile class as compared to the rest in the first place
Tip: if you die in a party with no healer just respawn back to town and leave party. Then you can register in party matching and you will be reinvited back to party and teleport there. Make sure you have plenty of summoning stones!