@OP are you trying to ask "Should BG3 be as close to the 5e combat rules as possible, or can there be rule changes that might improve combat?" (I'd vote for the latter because a lot of 5e rules are meh)
Alternatively, are you trying to ask "Should BG3 be as close to the 5e combat rules as possible, or do we trust Larian to make any rule changes?" (I'd vote for the former because Larian's decisions so far...haven't been the best)

But, as written, the poll is gives these choices:
- "Traditional": as close to 5e RAW as feasible
- "Simplified": mechanics as "released in the Early Access version of the game" (including surface-creating cantrips, high ground/backstab advantage, bonus action disengage + jump, etc)
which is not quite the same as the questions above. If you mean this, I'd vote for "Traditional" because so many of the original rules in BG3 were poop. But I don't categorically disagree with making any changes to 5e's system.