When Pep first took over our side, he was cautious in his first year - not sure about what we needed to strengthen. Next year, he took decisive steps to fill gaps at CB and RB/LB - and we won two tiles as a result.
Too, we picked up B. Silva on the cheep, a huge asset.
So in answer to the title question - very much yes we have a transfer strategy and we're in excellent hands with this regard. Not all signings will work out - but enough of them do to move us forward; moreover, the signings we make are not at all willy-nilly - they're made with a clear focus on strengthening our side in areas we need most.
IMO we were hampered by three things with regard to transfers last window:
1) FFP rules restrict what we can do in any given window; the club has expressed interest in several top players but backed away once the asking price got too extreme;
2) After winning a title, the tendency is to relax - why should we extensively strengthen if the squad that won the title last year is largely coming back this year? (similar thing happened to Mancini, though Mancini was handicapped further by lack of cooperation with the Director of Football);
3) Management knew that Kompany would be leaving - but presumably, we had much higher expectations of both Stones and Otamendi. Both have suffered a large drop in form this season and to compound matters, Laporte, who had the most touches of anyone in our side and was thus a huge influence on offense, not to mention his defense second only to VVD, got injured.
At any rate, I've full confidence that Pep will strengthen our side substantially next summer.
Sniff sniff