Yeah maaaan being (even) more invested with Ella/Maddy would have been hard to handle and i simply wouldnt be really interested in other LI's anymore afterwards i think. Imo its balanced good.
I interpreted the MC being such an pricky unlikeable asshat in the beginning yet entirely different the next time we saw him as a way to show how HEAVILY Ella influenced him positively which seems to be a ongoing thing in this avn as Ella apparently had a strong positive influence on quite a few people like Lisa or MC's mom too. Wouldnt be too surprised if it did lead to Ben changing too.
So MC suddenly being a cool guy is like a memorial to Ella too, she apparently manged to realize that this prick is salvagable and turned him upside down

(he probably simply matured too). Its just another way of showing how special Ella was as a human and how much she still was able to accomplish despite her short time due to influencing others in a positive way.