There's more reasons why you see scimitars most often (it's not 60-70% by far though, especially as two handed weapons are pretty popular) For druids and clerics its also spikes which is very notable dmg boost. And while hitting might seems easy on lower tiers once you move to T5 get ready to missing a lot for a while. And there's T6 with even higher ACs coming. And scrolls and buffs help only in limited fashion as there is still +20ab hard cap you can't avoid. Also you are not giving up ton of AC by not using shield. You're giving up 3-5 based on a build (as do you only use shield spell for +4 or do you have divine shield to give you up to +10 shield AC) Only reason I have one character using shield is that he's FS who needs to use bastard sword and doesn't have dex to dual wield. Otherwise I'd alsways pick two handed or dual wield just as a personal choice. Shields are boring.
And yes ultimately it also boils down to what is reasonably possible as we do have shared weapon feats where under same group you have weapons with different ranges and mults.
In the end I really think main reason why some weapon groups aren't used lies much more in the loot and that is being worked on. I have character using maul and they're doing pretty well but there's only one T3 maul in loot and that's it. I love mercurial longswords but there are none (my dream is double-bladed mercurial but that probably ain't happening) even good scythes are rare. Meanwhile there's over 18 T4 scimitars, many of them pretty good so its no wonder people stick to what they can find. Same reason why Shan used scimitars until he managed to get double-bladed from an event. I'm pretty sure we'll see much more variety as soon as there's new weapons in drops (which will also dillude how often the previously numerous ones show up)
And yes ultimately it also boils down to what is reasonably possible as we do have shared weapon feats where under same group you have weapons with different ranges and mults.
In the end I really think main reason why some weapon groups aren't used lies much more in the loot and that is being worked on. I have character using maul and they're doing pretty well but there's only one T3 maul in loot and that's it. I love mercurial longswords but there are none (my dream is double-bladed mercurial but that probably ain't happening) even good scythes are rare. Meanwhile there's over 18 T4 scimitars, many of them pretty good so its no wonder people stick to what they can find. Same reason why Shan used scimitars until he managed to get double-bladed from an event. I'm pretty sure we'll see much more variety as soon as there's new weapons in drops (which will also dillude how often the previously numerous ones show up)