The following question is not a general question about applying to many academic positions at different institutions, but rather about applying to several positions within the same institution (regardless of applying to multiple other institutions as well).
Starting questions are, as follows. What are the potential effects, following such strategy? Mostly negative, mostly positive, or neutral? A situation often occurs, such that an institution advertises several positions that I believe I would fit, however, among those, only one (usually) is the best fit (my preference), but others are also suitable (decent fit).
Therefore, my main question is twofold: 1) is it a good strategy to apply to all suitable positions within an institution; 2) if Yes, should I mention my preference, for example, in an application letter (if No, I assume that the optimal choice is to apply to the position with the best fit)?