I like Jeremy though, he's a bro. Marcel has much less reason to exist.
Marcel is much more tolerable imo, I don't really care about Ian's bro perspective myself. As a friend to him I guess I don't mind him too much, but playing as Lena and from her perspective, he only has his looks as a positive to me.
He acts feeble when it comes to Louise, has less than stellar sexual performances in many of his scenes (being a pump and dump kinda guy, not willing to foreplay etc.) and he spends half the game simping for Ivy who doesn't really seem to give much of a damn about him given the amount of convincing she needs just to sleep with him. Odd behaviour between two people who both claim to view sex as something pleasurable and uncomplicated.
We don't have a lot of Marcel yet but he at least has the benefit of not being Jeremy lol. He's packing a better tool, as one might say, and you don't need to be a terrible friend to Louise (at least when it comes to Jeremy) to get his content so far.