I think taking everything into account the rumoured 3 from Wigan are smart signings. Robles if true is a back up cheap keeper and unless Howard gets a big injury is not gonna really matter. I also wouldn't say it's nailed on we will go for him, if we do after working with him for a year I'd say Martinez knows if he's suitable for the role or not.
Alcaraz, on a free is again a good bit of business. Moyes constantly said we were 1 short at CB, hence Duffy having to sit around as fourth choice which is not ideal. Whilst I don't expect RM to play a back 3, I'm sure he may at times and bringing in a player who is comfy on the ball and used to the formation is a worthy addition. Heitinga will move on and I still expect him to be replaced with another CB too. I expect that signing will be more of a name were all happy with and will probably be distin's replacement more so than alcaraz.
Kone is a interesting one and if it was moyes bringing him in this summer people wouldn't be questioning it as much. Again after scouting him and working with him for a year I'm sure Martinez knows the player well. He's signed him for the here and now, to score the goals we were missing. 5M really is nothing for a striker really. Although I wanted a bigger name,we really don't know whether he's the main signing up there or a replacement for jelavic. Finances maybe dictating this one, if so can't see really anymore RM could of done with 5M.
IMO I think he's squad building at the moment, with limited cash! If he ends up spending 6M to bring in 3 squad players that will improve our squad and plug a few holes that's not bad. There will be more important signings to come I'm sure, mainly in CM and out wide and maybe even another striker. These will be the ones to judge him on more IMO