I see the TB lovers are out in force again on the site.
Hehe, well... I wouldn't say I'm a TB lover and I was perfectly fine with Kingmaker, BG (which I both loved) and PoE (wich I liked) being RTwP.
I also felt fine playing WotR in RTwP and started to play withit. However when I switched to TB from time to time especially in the tough battles, it felt better each time. Just more fitting.
For example there are spells which have a very short spell duration, especially at the first levels (with duration depending on caster level).
So in RTwP I felt it doesn't even make sense to cast them as timing would be difficult doing multiple actions in parallel.
In turn based this works perfectly and you can really adapt tactics in a battle and try to win with using spell effects smartly.
Like in the battle with a water elemental in the Shield Maze I had Camellia casting Protective Luck every round for Seelah not get hit.
Also casting AoE spells is a lot more feasible in TB because you can just place them a lot better, and you also have better control over your characters not running in the affected area.
So for me this instantly was and is fun. However I think this fun does not come from the TB alone. TB alone doesn't mean a thing. Combat in D:OS 1&2 imho was far from great.
I've said it before, it's not about TB vs. RTwP combat, but about well designed combat and badly designed combat.
For TB to be well designed having a well designed ruleset that is made for TB is mandatory. And here D20 shines.