Maybe this could be an opportunity for Lukaku to make improvement in his average rating at the same time. He has a really good chemistry with the Serie A so he should continue to show this more consistently.
Good look at tje big man for Belgium and As Roma, your checks are valid and accurate. But, you know what? He doesn't need improvements in his ratings, we need to look at the various environments and those around him.
Don't forget he is only a goal scorer ( Give me the ball after creating the chances so I put it at the back of the net for you ) With As Roma he has reduced creativity and support, that's the main reason to his reduced goals scored in Italian Seria A.
For the national team and duties, go check the creative players he has got amd how they play to his strength. Doku for example makes the scoring easier for whichever attacker he plays with. He's doing same for Manchester City and Erling Haaland. Romelu Lukaku also heaped praises on the lad.
Jose Mourinho doesn't have enough quality players who can create these chances for him, anyways, he seems to be in a better form than he was last season.
Honestly yeah I'll give you that there about Lukaku's playing style. He is more like a finisher like you have said. He is really good at it as well this season. I assume Mourinho is very contented with his work done so far in the league as well. The only thing he would like to see from him is to be consistent during the season.
Can he be that consistent? Why not? Like I said he likes to play in this league. His performance at Chelsea wasn't even close to his performance level in this league. Not only Chelsea though. He wasn't good at all in the Premier League.