Health restore

IMO think this would be a tad too strong, this would make kill chaining much easier.

You can already shield-swap, which also includes some technical skill to pull it off.
Of course that's just shields and not health, but personally I feel like it would be a bit too strong.

Does shield swapping not prove useful enough to survive in-game? Or is there another reason to why you would like to see something that would restore health on kills?

Like regenerate health over time Like full health in a minute but if in storm it doesn't do anything like after every kill you gain health... 

Shield swap has not existed for some time.  You can grab a shield core quickly from a death box which may restore/partially restore your shields.

Doing a finisher on a downed opponent already completely restores your shields but that's obviously risk/reward trade off depending on whether or not you think you can get away with it.

Having health restored on a kill is way overpowered.  I don't think that would work well at all and would just further make the lobbies totally unbalanced towards the top players in it, it's bad enough as it is when it's very unbalanced.

Please don't say things like this out loud. Respawn will hear you and the next thing you know it will be in an LTM and two seasons after that they'll incorporate it into the main game. Just no.