I spent 20 minutes with Eliot in training mode to see what I could come up with and here are some ideas. Keep in mind that I don't play Eliot, so I don't know how he was played before. I'm just tossing out some ideas of how to make him into a character that works more as a zoner that plays comfortably outside of other characters range.
2H+K - already a high crush, make it -5 (-3 at max range) so it can be his main safe poke when used from max range, but without an easy launch other than the predictable followup.
66K - make it crumple on normal hit and bound on counterhit, make it -4 (-3 max range) his go to ranged mid poke that can start combos and is safe.
66P+K - already a decent whiff punisher, up the damage to 55 normal, 68 counterhit to match Gen Fu, but without the close hit property.
6H+K - already a low crush. let it have bound status on normal hit (or sitdown stun) and make it a 2in1.
3P+K - already a high crush launcher and can connect from decent range, let it launch on normal hit and give it a bit more range.
9K - let it launch on normal hit, since it moves you forward a decent amount.
7P - used to get people off you if they managed to close in, let it push back further so you can get some space.
7K - make it a high crush, on counter hit give it launch height like Akira's just frame knee (just like Gen Fu's buffed H+K in DOA5U) or enough height to get a 66P+K afterwords for style points, but not much else since it moves you back so much. The main purpose would to put you back at max range again.
Throws - other than 5T, 66T, BT 5T, all of Eliot's throws push people outside of wakeup range or give frame adv, so they already seem alright, not much I can think off other than letting 236T hit ceilings.
Backdash - make it go further and faster.
I want to mention I'm no doa expert, let alone Eliot expert, so these are just my thoughts with less than 30 imn in the lab and I welcome criticism and ideas from people who actually play this character.