Tadas

I wouldn't say that I dream about it, but I do get power fantasies imagining myself in that universe and what I would do for a couple of days after reading the series.

Another thing to consider that unlike normal weapons, they cut through enemies without resistance - so shaping them like a sturdy sword or spear is largely artifact of thinking about weapons that need mass and sturdiness to go trough armor and flesh. They don't need to be sharp or pointy or shaped stick - like. You also don't need to deal with consequences of bringing weapon back into original position after swing - it can change shape if inconvinient or be resummoned. Some kind of weapon that is a bunch of loose strings held in hand might be really strong, because how hard it would be to dodge. Maybe something bola like, but messier.

I am sure you are right, it won't be enough just that, but thematically the most import part. Probably. We still don't know how did Parshendi free themselves from old gods in first place, what caused their slave forms, maybe a sacrifice from the Heralds will be required, it would have some nice symmetry (though hopefully oathpact will be replaced by more permanent and less horrid solution). Maybe the the Sibling that has been hurt by humans is part of it.

Couple times when Kaladin fights, wind gets mentioned in terms of making him more agile, Syl refers to herself as a "graceful" weapon. There is a scene where Kaladin saves group of people by manipulating wind, which would not be possible with Gravitation. If adhesion allows manipulating pressure, making him more mobile, more agile, faster etc it gives a lot over skybreakers. Skybreakers would still need to touch to use Division which would be hard given how long shardblades can be and how mobile Windrunners can be. Also shardplates are resistant to magic. To quote Mike Tyson: my trainer Customato we always put a great deal of emphasis on our speed and combinations. He always told me "speed kills, speed is what kills, the speed kills".

I mean Fused were made at some point, I assume by Odin, I doubt there is a reason why more couldn't be made out of this generation of Parshendi, they wouldn't have same experience, but also wouldn't be insane. I think the way to beat them is to treat everyone on Roshar better - a huge one would be to abolish slavery and maybe current class structure, giving same rights to Parshendi as humans. Theme slavery is bad is very apparent and might makes right is bad becoming more and more apparent. I think ultimately Fused will be defeated by listeners using some song that stops everstorm, lets fused to finally rest, while humans defend them while they are singing.

Arms race might also mean that there are more radiants/fused popping up and more people trained as soldiers, better fortifications. Flying ships and restoring of Urithiru are almost guaranteed. Adolins dead shardblade becoming alive as well, so it's likely that it will be possible for others as well. An enormous stash of shards is very likely. I think at some point bondsmith will very likely unite unmade into "made", maybe cleanse it from Odiums influence. I also think we haven't seen the power of listeners songs fully, in dawnchant they say that humans don't hear Roshar, it's likely that songs are more than just quirky way to speak. I am pretty sure that making fabrials by trapping spren will become more common, more powerful but it will also backfire at some point. There is a theme going on that slavery is bad.

I think deadliest is highly situational it would depend on say - is it 1vs1 radiant vs radiant(fused)? radiant vs army? multiple radiants vs multiple radiants? Do they have shardplates? How much stormlight do their abilities cost? Is it limited stormlight situation or are they fighting in a storm or something similar? Are they fighting in an open field or indoors? Assuming 1vs1 full shardplate radiants in an open field I think windrunners would be strongest - their mobility would be too ridiculous, if they can manipulate winds - not only giving them ridiculous boost to their mobility beyond gravitational pulls, but it would also mess up their enemies. Pretty sure you need touch for division to work, and in that case it would not be much of an advantage over shardblade (shorter reach and would probably cost ridiculous amount of stormlight to go through shardplates). Same for elsecallers - I doubt transformation would have direct effect on radiants or shardplates. Also lashing could be used to throw rocks/blades etc exploiting blindspots. In a limited space, assuming they are equally skilled with weapons - my bet would be on.. truthwatchers or lightweavers - illusions to blind enemy, showing multiple attacks/attackers at once, always guessing which one is real, it would be so hard to block/parry consistantly. Truthwatchers have insane regeneration if they do get hit or lightweavers manipulating enviroment with transformation, they would be insane duelists. Against an army? Probably whoever has best aoe(maybe cheapest stormlight wise) - so stonewards or guys with division, soulcasting seems better for single objects and my impression that it's fairly "expensive".