I still think the best thing they could do is instead of expanding Summoner vertically (adding more buttons overall, adding extra weavings etc), they could do so much expanding it laterally since the job is so designed for that, on the surface.

Add:

* More major summons, and split major summons into even and odd minute ones, which one you get each time is random.
* More minor summon sets, each has a summon that is slow-casting but deals a ton of DPS, one that is all-instants but medium DPS and one that is either fast casts or instant casts and low damage but has some sort of utility attached.

That way, there's so many options. If you get theses random, the skill of playing Summoner comes with dealing with the hand the game deals you. Like ideally each set also has a "theme" like:
* One set has at least one close-range attack on each minor.
* Another forces or enables extra movement in some way at least once on each minor.
* Yet another is the Warring Triad. To emulate their fights a bit each has two "phases" of only 1 or 2 attacks each then you re-summon the summon in a slightly changed form and get another 1-2 attacks. So 6 minor summons total instead of 3, 2 each.

Each time, they slot into the ruby/emerald/topaz setup, which I'd do damage/utility/mobility.