First, welcome back to the game

For the things you said, I was okay until you talked about the egis.
Okay, we got that a lot of SMNs are crying over egis, because no Ramuh-egi or Shiva-egi.
Lorewise, it is possible to summon them is some way, I agree on that.

BUT, why would you want to have them ?
We already have a Tank (Titan), a caster (Garuda) and a melee (Ifrit).
You talked about having a Ramuh-egi who will increase heals and other ideas on new egis use.
I'll just ask 1 question; What is the SMN in FFXIV ?

As far as I know, the SMN is a DPS. What is the role of a DPS ? Dealing damages.
Why would I want a pet that doesn't increase my DPS ?
I'm not a Support DPS like the BRD or the MCH, I'm just here to deal damages, I don't care about healers or tanks, they have enough skills to manage themselves.
If there is a problem, the BRD or the MCH will help, because they are designed for that.