That’s arguable, but I would agree with is that they probably wouldn’t have bothered. The Seljuqs had bigger fish to fry and had not sought that engagement in the first place. Manzikert was an acute failure of judgement.
Indeed one potential pitfall from a Manzikert triumph would be Romanus being persuaded to push his offensive farther, something the ramshackle Byzantine military was definitely not up to ( especially against an opponent with superior mobility ). He might have won only to lose later.
If Romanus decides to just negotiate from a point of strength and continue to reform and fortify it is most unlikely he would have been vulnerable to a coup. He was 41 in 1071 and could have easily gone another 10-25 years, quite likely pre-empting the rise of the Komnenoi. He was a seemingly competent man under normal circumstances, but what kind of legacy he would have left is really hard to guess at.
I’m guessing not. A stronger Byzantium = more Mongol attention. I’m guessing they would have been a major target and wouldn’t have fared much better than anyone else ( including their RL successors in Anatolia, the Rum Seljuqs, savaged by the Mongols at Köse Dağh ).
No Manzikert, quite possibly no Crusades ;). Remember they were triggered by Alexius Komnenus’ cries for help. No Crusades also might mean possibly less prominent Venetians, who did so well out of those affairs. It also means possibly profound shifts in the development of Catholic theology. Maybe.
Manzikert really is a fascinating moment, which much like Hastings arguably caused a major shift in the pathways of history. But while it is possible to envision a re-vitalized Byzantine state, it might just have gone down the next year or a century later. It’s just really difficult to guess at the outcome of such a change, though it is always worth spinning some speculative fiction out of it :).
Well, maybe. But I have my doubts. I’m not usually a determinist, but in this case I’m inclined to regard nationalism as a likely inevitability.
No Mongols? Nah. Manzikert’s wings couldn’t beat that strongly. The Mongol eruption was essentially unaffected by events in the Near East. And like I said I don’t fancy taking bets against the classic core Mongol Imperial Army going up against anyone.
No Renaissance of any sort? Dunno - maybe not at that time and place, but who knows? That’s one of those impossible to predict items IMO.