Bear in mind that a huge cRPG like BG3 needs faster levelling than PnP. Part of why D&D games contain an insane number of enemies compared to PnP is simply to do with pacing. A computer game has different pacing needs than a table top game, there has to be enough combat to keep people hooked and there has to be enough character progression to make players feel rewarded. This is why the idea of a level 10 cap for BG3 was highly debated when first announced. This combined with the expansion of the scope of the game in terms of story, sidequests and environments as well as the resultant expected increase to average play time and the play time of a completionist's run is why Larian went from a level 10 cap to a "somewhere between 10 and 15, we haven't decided yet" level cap. Given the time taken to hit level 4 I can foresee a fair amount of play to go from 9 to 10 and honestly 10 levels of progression in 100+ hours of play is really, really................ really slow for a computer game, in terms of a player reward loop. BG3 may even be slower progression than that, so it's definitely a bad idea to slow down character progression any further. The levelling pace in BG1 and the lack of character progress is one of the reasons why a lot of modern gamers never finished BG:EE along with dated visual aspects and the complexity/counter-intuitive nature of the ruleset the game used. BG2 had a considerably faster rate of progression and had fewer complaints in that regard, but I've known plenty of people (all rpg fans) who tried it for the first time in recent years and had that same complaint about SOA, it wouldn't surprise me at all if modern gamers are even more sensitive to slower progression rates than those of use that grew up with those older cRPGs or those of us that play a lot of table top 5E.
Besides, imo, the higher level I can reach by the end of my first playthrough the better. High level is where all the really cool stuff is anyway, more interesting plots, more interesting enemies, more interesting abilities and builds, more interesting locations. I'll stop at that though before I spark the never ending high lvl vs low lvl debate.
