Call it a feeling, but with the way they did the Shiva storyline, I wouldn't be surprised if they altered the SMN job at some point in 3.0.
Before you jump on the bandwagon of "the job is fine as it is, don't fix it" or the bandwagon of "lol another Akiza", please understand that I'm in the same boat as a lot of you guys, but I'm willing to admit that the design is rather disappointing, and although the job itself is REALLY good, you don't really feel like a Summoner.
Now as for the Shiva storyline, if you do the main scenario, it pretty much speaks for itself.
Spoilers for those that haven't done the 2.4 main scenario below:
Lady Iceheart actually SUMMONS Shiva with the use of some form of aether, maintaining her will and control over her body. Unlike the Egis who are aetheric matter that which accompanies the adventure, Lady Iceheart becomes Shiva herself.
It just leads me to think, that with this lore now a part of Eorzea, wouldn't it make sense now to actually make this the ACTUAL way of summoning in FFXIV? It just feels so much more Final Fantasy-like, than the way it currently is.