On the one hand, it might be interesting having someone who is new to the series give us their take on the series with fresh eyes...but since she does seem to say she wrote a faithful adaptation (and, to be fair, she may have been instructed to do so), I'm not sure that "freshness" will amount to much.
On the other hand, having a dedicated fan do the novels would have potentially meant a greater attention being paid to detail, an awareness of and desire to correct plot holes, and expanded lore and more character development. But, if absolute faithfulness is being mandated, then again having a fan in charge wouldn't make much difference.
There's really nothing we can do but wait for the first volume to come out next month and for those of us on here who can read Japanese report on it to those of us who can't.
I just hope we get new artwork if nothing else.