New/Improved Rune System (We due for one?)

I used to play this really cool game titled Dofus Arena by ankama games. Why its never been ported to mobile devices beats me. Anyways it was like a turned based league of legends but where you control the entire team as opposed to one character. A bit like final fantasy tactics and chess. Prior to challenging someone you would set up your roster of champions as well as their equipment.

Each character had a certain cost. You could have a team of 3 characters with more equipment or 4 or 5 champions with a bit less to spend on equipment spread out over all champions.

Anyways what was cool was that it kept things balanced by giving everyone an equal allotment to spend for their team. I was thinking the same principle could be used for a new rune system.

I added a picture of how the dofus system looked like as well a really quick draft I did to give you guys an idea of what it could look like, It wouldn't go by runes sadly but more like stat points. You wouldn't buy runes you buy stat points which might seem bland. I mean I guess you could add runes instead of having a sliding bar. i'll make another picture of the same thing but with runes.

Anyways posting this to see if you guys might also have ideas on way of improving the rune system. Please discuss what you like dislike about the current rune system. -what cool ideas/mechanism do you think could work.