Arcanist and Summoner: a possible solution

[DPZ2]

Your comment about Energy Drain/Siphon and Fester/Painflare shows you might have missed the way I have re-worded the upgraded Abilities to eliminate the problem. That might be on me though: my first post is seriously too long and it's easy for some things to go unnoticed.

You might want to go back and edit this detail out of your Arcanist description then:

"This has mostly to do with Energy Drain/Siphon and Fester/Painflare. First of all, it makes no sense to occupy 4 key binds for something that could just as easily occupy half of that. Also, since in EW both Fester and Painflare have just 1s of recast time, there is literally no reason to have them be different buttons. So, through the leveling process, Energy Drain will upgrade to Energy Siphon and Fester will upgrade to Painflare."

[FalfaK]

You might want to go back and edit this detail out of your Arcanist description then:

"This has mostly to do with Energy Drain/Siphon and Fester/Painflare. First of all, it makes no sense to occupy 4 key binds for something that could just as easily occupy half of that. Also, since in EW both Fester and Painflare have just 1s of recast time, there is literally no reason to have them be different buttons. So, through the leveling process, Energy Drain will upgrade to Energy Siphon and Fester will upgrade to Painflare."

I think OP meant for the abilities to become a single button each, as in, make the single target ones upgrade to an AoE falloff version.