My recs are nothing new, too, but if by any chance you haven’t read them…
Homeless by flaming muse and wesleysgirl. The others decide to work for Wolfram and Hart. Angel and Wesley... don't. What do they do now?
Darkness Visible http://archiveofourown.org/works/730097 by by ELG. AU post-S5 of Angel in which Angel, Wesley, Gunn, Lorne, and Spike have been kicked out of Wolfram & Hart for plotting against the Senior Partners. Disorientated, cash-strapped, and still mourning the loss of Cordelia and Fred, they have set up as detectives once again in new offices. A soul-eating demon is creating mass-murderers all over LA and the new Angel Investigations is struggling to find a solution. Can they stop the creature without losing their own souls?
Fallen Angel by phantisma. Set mid-season 3, Angel's slide into darkness takes a nasty turn, even as Wesley discovers its cause, and Angel disappears after torturing Wesley. A year later, Angel is back, and this time Wesley is a changed man. Wesley goes out hunting, aiming to finally fulfill the destiny his father demanded of him, only what he finds is neither the vampire he befriended, nor his evil alter ego, but a broken hero, his mind torn apart by torture far worse than anything he ever dished out.
Also, buffy&angel LJ fandom might be not in its prime now, but you could still ask for recs at find-buffy-recs. Always worked for me.
And you can check this really old recs page, if you already hadn’t - Maybe you missed some of the old classics.
Or browse through Angel/Wesley tag on buffyverse top5.
