I don't believe the Wizard exploit is an oversight or low priority fix anymore. I think it's intentional. Just like Wizards learning spells from other classes spell lists and non-caster classes being able to cast spells from scrolls.
I applaud Larian for their passion and many great things about the game. But combat and class balance/identity is something they can't seem to get right because they are obsessively trying to make D&D more like DOS. They should just let D&D be D&D and it would be a better game for it.
I rather doubt that raw would be a better game.
Especially since it is not a major problem.
Well, hard disagree. Unlimited long resting and unlimited spell preparation for Wizards go directly against D&D attrition based per/day design and create big balance problems which will be more and more apparent as the characters level up beyond 4 in the final game.
It is impossible to introduce a hard rest limit, which means that the balance will fall out of the window anyway (there is a way to do it, but Larian won't introduce it because players will eat them alive)
Even Owlcat has practically given up on any attempt to limit resting (this psuedo restriction in WOTR is no restriction if you can find items that remove corruption at every step.)
The current system is just more convenient but it has no effect on balance anyway as long as rest isnt heavy-restricted (which will not happen)