We are playing the system we are because it's best suiting the players we have.
Finding Lukaku is viable option. But our goals of late have come from nice build up play.
I expect when we sign attacking players in the Summer we will revert back to Koeman's preferred system, we continue in fine for to force a decision.
This ^^^ is spot on for me. The penny finally dropped with Koeman that to get any results with these players you have to play to their strengths: which is allowing them to get on the ball and construct a move and get bodies forward to overwhelm the opposition. That is a clear change from the pre December set up Koeman which was all about bodies behind the ball and the quick ball out from deep in our half. The Bolasie injury probably forced his hand in that respect. It was a fortuitous accident for Koeman as we haven't looked back since apart from the FA cup exit and the away game versus Hull. But you're also right to suggest that when the summer comes and Koeman has revamped the first team we will see a reversion to his way of playing with players capable of playing in that more direct manner.
I see it differently. I don't think Koeman likes hoofball any more than you (or I). Koeman inherited a squad that was unfit and lacking confidence. As a team we were unable to affect a coordinated midfield press and incapable of reliably playing through an opposition's. Koeman identified these weaknesses and adjusted tactics accordingly. He focussed on improving fitness, looked to sign players better suited to a more possession based, high(er) pressing style, and offloaded players that he thought couldn't make the transition.
Think we'll see less and less route one as he moulds the squad to his liking. He strikes me as a pragmatist, willing to do whatever needs to be done to deliver results while building a foundation for more attractive, winning football.
Tbf I had similar concerns as yourself early on, including being less than enamoured with some of his public comments. But you can't judge his relationship with players based of public soundbites. He spends a lot of time communicating with the squad in private and all indications suggest they are responding positively.
Any decent manager (not just in football) knows you can't be everyone's mate, you need to establish an appropriate professional relationship or things can go bad very quickly (I know from experience). I'm more concerned with the stick our lads get from the fans rather than criticism from Koeman. Joel didn't react the way he did v Bournemouth because of anything Koeman did, in fact I wouldn't be surprised if some of Koeman's comments were for the fans benefit as much as the players.
COYB
EDIT: Why are my posts still under moderation? This is the 8th one.