The problem with the original run of Indy novels is that... well... they were mostly awful. Philosopher's Stone I'm going to say is the counter example, but all in all the books were a bomb. Interior World? What was that? Ugh.
But yes, I'd like more novels. As No Ticket said, I'd like for them to be a bit more mature, but more than that I'd like for them to be more faithful to the character we saw in the films. I think most of the novels missed the ball in that regard. They seemed more like an easy cash-in than an actual continuation and development of the character.