I'm one of the few people don't want Paragon/Renegade to leave. Altough, I would like the outcomes of P/R were more balanced: I like in ME3 if Rana Thanoptis (from ME1 Saren's breeding facility) was alive, she was indoctrinated and kills people (a Paragon choice went wrong). Also, I like if you rewrite the Geth in ME2 in ME3 bites you in the ass. But, most of the time being Paragon will get the best outcome. The unbalance is what it makes things bad IMO.
I think Rana might be the only time it really hurts you. If I stay true to my Paragon ways, I eventually unite those Geth and Quarians, and all those extra Geth are helpful, after all.
I figured there must be people who like it. I just can't think of a way to make it both functional and setting appropriate, since it's basically a Light Side/Dark Side meter. If they keep it, it will likely be non-functional, as it was in ME3. Then there is the altered or absent P/R conversation options to consider. It just seems pointless to me. :/