Talking about Arsenal's balance as a team and if there's any need to overhaul the team, I personally do not think they need to overhaul the team because the club manager Mikel Arteta have been building the team for over four years now. The young Spanish manager have been able to significantly improve the Arsenal team than we've ever seen them since the club's legendary former manager Arsene Wenger left the club so I think they only need to make few significant additions to further strengthen the team and make them more formidable than they were last season. Gabriel Jesus used to the club's first choice striker but last season, he struggled to perform well after suffering injuries which made Kai Havertz overtake every other striker in the team to lead the attack. So if there's any position Arsenal really needs to strengthen, I think it's the top 9 strikers position.
Arsenal cannot be talking about overhauling at this time, except if they would consider rebalancing where necessary of which I'm not spotting the many necessities for that just yet. Another point of consideration is that building the tem fo the past four years isn't reason enough not to overhaul if need be. Arsenal have been of a good and impressive improving form and they appear to be getting better every season so I'm looking forward to a difference from what I've seen in the past season since it looks like there have been a progressive growth trend with them. Getting better than last season is something I believe and I'm very hopeful about that Kai havertz will do, Arteta is most likely going to make sure to that.