Well of course it will. To begin with Sherlock is not believed dead or in any kind of known peril. So, for a start, we will not be plagued with further theories on this point. It is true that we have not been given a definitive answer on how he survived the fall but I really don't think it will occupy people in the same way that it did before.
In fact, this series has left us in a pretty good place (whether you liked it or not). John has forgiven Sherlock and is happily (?) married; no one that we really like is dead or in any obvious peril and we've even met some new and interesting characters. Yes, a certain individual may be reappearing (or not) and that simple fact will probably form the basis of some lively speculation.
There may be some on-going skirmishes between the fans of S3 and those who felt it lost its way but these are matters of opinion rather than thoughts on the future and the latter is where the hiatus entertainment truly lies.
We have it from the horse's mouth that both series 4 and 5 have been (loosely?) plotted out and that they are trying to not make us wait so long for the next series.
I guess we'd better knuckle down and get on with it....the waiting that is!
Written by Alistair DuncanBuy my books here