The German, brought to fill the vacancy from Brentford just eight days ago, is keen to instill a high tempo, high pressing ethos in Latics' ranks and the opening half an hour here followed that blueprint perfectly.
However, Wanderers clawed themselves back into the game and after Neil Danns and Andre Moritz, from the penalty spot, had brought Dougie Freedman's side level, Callum McManaman's strike was required to give Rosler the perfect DW Stadium start.
"I don't like so much excitement," he said of a pulsating north-west derby.
"The team responded very well to the tactics we have set out, pressure high, pressure all over the pitch, attacking-minded football.
"The first 35 minutes was very, very good; that's the way I want to play. The players were very good in executing that on the pitch."
It was fitting that McManaman should crown an inspirational performance with the winner as the winger, who Roy Hodgson is keeping tabs on for the England squad, terrorised Bolton left-back Alex Baptise all afternoon.
Rosler, though, revealed he almost left his star performer out of the starting XI.
He added: "I was thinking of not playing him from the start, bringing him on as an impact player. But he was so good against Maribor (on Thursday) I thought we need to build confidence with this lad.
"He is a match-winner for us; we just need to bring him on to a level where he can play 90 minutes with that intensity and that quality. We left him on and he will get a lot out of this fitness wise.
"On the ball, he's fantastic. He can destroy oppositions, he did it very effectively and to get the goal rounded up a very good performance from him."
Bolton boss Freedman was proud of the spirit his players showed after initially fighting back from two goals down, yet claimed they let the emotion of the occasion get to them for McManaman's crucial strike, which came just four minutes after Moritz's leveller.
"As soon as the second goal went in we showed too much emotion and that hurt us," said Freedman.
"That's the most disappointing thing. Apart from that the lads have got to take huge credit for the spirit they showed. The result wasn't to be with us today but the performance certainly was. If you've got a team playing like that the results will pick up."
As is usually the case in a typically feisty derby affair, the contest did not pass without incident.
Freedman was perplexed by referee Kevin Friend and his assistant for their collective U-turn in awarding Latics a first-half penalty when a cross struck Mills' arm, a decision he felt was influenced by a host of blue and white shirts surrounding the official.
Freedman added: "It's very, very hard to take when the referee has gave a corner, the linesman's given a corner.
"Five or six Wigan players have surrounded the referee which is not in the rules, not one of them has been booked, then he's changed his mind 30 seconds later.
"The linesman has changed his mind from 45 metres away to now gave a penalty. Is he hearing through the microphone? I don't know, he's surrounded by players. The perception is he's let me down."
- Sports & Recreation
- Dougie Freedman
- Andre Moritz
- Callum McManaman