You go big dick wild magic and take the punches. Wild mage berserker sounds like a ton of fun and I am seriously considering it.
Save scumming every single "negative" interaction you have in the game just totally kills the vibe for me. Can't do it. But autists save scum on every single locked door they fail at and everything that doesn't go exactly the way they want.
Not the way to roll amigos.
Wild magic is fun. I tried some with a wild mage sorcerer. I summoned an extra enemy right on top of me one time, the once I think it gave a group buff where it refreshed some spell slots, once I think... it lit a torch on the wall? It's very random. Nice thing though is that on dice rolls you can select wild mage to gain a boon (or maybe a reroll, I forget). It charges up so that the next spell will activate wild mage.
As to dice rolls, you can reload as you say, but you can't reload in the middle of a dialogue. When dice roll checks are present in dialogue (which they are more than not), there are usually several in a row. So the first time you might succeed in in the first two, fail third. Reload, do three and fail fourth. There are a LOT of dice rolls.
Nice thing though is that when playing, you get "inspirations" from random events. Example - in the first "dungeon" you find a rare book, you manage to open it and Gale will get a wizard inspiration. It gives some exp (usually 25) and an inspiration point. You can save up to 3 or 4 inspiration points and if you fail a dice roll, you can use one to reroll. You get inspiration points from many events, like a crit kill on a certain enemy might trigger it for a warrior and so on.
With that combined with all the different ways you can add modifiers to your dice, you don't need to save scum that much even if you were inclined. That said, class and stats do absolutely make a difference there. At least in the early stages of the EA a warrior will have a harder time with dice rolls than a sorc or bard.
With so much dice rolling in dialogue and the myriad of ways things can end, a charisma based main is very tempting. As in the video shown earlier on from Fextralife, they said something along the lines of "you don't want these to do the talking" about some classes. When I play, I am going to run around with my character. I don't want to have to select a different party member to do the talking because my class will have a much harder time with dice rolls.
I was planning to go wild mage sorc, but bard also looks very tempting. Especially the STR bard since that might also increase the carry limit, because running around as a sorc, I got encumbered and had to do inventory management more than I liked. If you're a loot hoarder, a few swords and some armor will leave you stationary. The way Pathfinder did that was great, tie weight limit to the total ability of the party and not individual. Only time I want to swap out and move someone else than my character is for combat setup or puzzles and the likes.