I’d say the first one. Would be pretty helpful and I feel has more use cases than the latter - especially with different types of AoE, I think the existing AoE boon wouldn’t work on chisels since the downsides don’t make sense, and for chisels specifically I would really like to see a higher vertical AoE type (than 2). Chiseling rows and columns of blocks would probably be the most common use. I’m not sure if a boon would make sense actually, since customizing the AoE type would be more important (than simply maximizing amount of blocks hit).
Heck, maybe chisel augments for different AoE types? I think that could be amazing.
But the thing I’d be most excited about with any of these choices is the possibility of a full 3x3 AoE block type changer. I had to place and convert thousands of blocks at this point as well, and I know I’m not the only one longing for it!