Re-reading Elmina's original post I do indeed seem to have misread it, so I'm really sorry for that. However, I still stand by my comment that SMN will not be changed in any major way, neither making it more 'FFXI-SMN' nor 'old-school FF SMN', for the reason that the single-player games and MMORPGs simply require different design paradigms. 'One-attack-per-battle' and then chuck regular spells worked in games like FFVI which had turn-based battle systems. But here, in a real-time battle environment, players are just too impatient to sit around waiting for the cooldown on a summon spell to become available (they're already complaining that the current GCD in general is too long, even though I do not agree with that complaint, this would just make things worse)., so a pet-based system is ironically more suitable.
This is also why FFXI's SMN was unbalanced, there they literally tried updating FFIII's SMN to be more like FFX's summoning, and the end result was not entirely successful (to the point the summons became such a drag on resources when they were out SE had to implement restrictions on the more larger - read: more powerful Avatars like Alexander in that you could only summon it once every two hours, and that they drained enormous amounts of MP every second they were summoned, restrictions which were mostly easily counteracted anyway. And why Bahamut was never summonable in FFXI and now never will be, so that's something FFXIV's version of SMN has over it's FFXI counterpart). But a balance has to be reached.
BST is a whole different barrel of moogles - FFXI's BST became broken for different reasons, it's original form is personally what I would like to see here (enthralling random enemies and temporarily using them as their pet), but how BST ended up in FFXI just made it too overpowered (when the 'jug' monsters were added, it just became a situation of 'get the most powerful jug monster and only use that, and some were effectively god-tier in that a BST could solo many bosses with it), and thus this is something I would not want to see here.
But again, it's all about reaching a happy medium, so I don't know. I guess I'm just optimistic in that whatever happens Yoshi himself is aware of such issues and is thus using them to guide his decision making for new future Jobs.