Actually, Lara Croft will celebrate her 48th birthday on Feb.14. Since she was born in 1968
We really need a game with old Lara like what they're doing with Nathan Drake. Anyway,
Like you said, humanization, but since you're going to record it for realz, it's pointless to call that a "flaw" right now. I would add more variation to the rhythm and voicing of the arpeggios around the 1:10 - 1:30 and 2:40 mark since the accompaniment gets really repetitive there. I think that orchestral instruments would also go really well with it and ambience. Maybe like, orchestral hall noise or nature sounds and maybe some atmospheric synth pads or drones. Which reminds me, I need to get on re-doing my old Tomb Raider orchestral remix.
Anywho, I'm excited to hear the finished version when you've got it done!