OK here are my issues with GTA 5 online after playing. I am sure people might disagree but my 2 cents.
1) The Music. I know that the current generation likes Brittany Spears and such, but as a child of the 80s and the 90s, the generation that played GTA back on the old Dreamcast, there is really no station in the game I like unlike games previous. Really they could have at least made a real rock station with some Priest, AC/DC, Maiden, old Metallica, or at least some Linkin Park, Offspring, etc.
2) Dedicated sessions for players that want to only run around the free world in psycotic homocidal killing sprees. Yes, I understand the concept of GTA, but there are players that would like to play without dealing with all the idiots. I mean I watched a guy sticky bomb a friends personal car just because he couldn't get in it, and I guess didn't want anyone else to get it, or just because he could. I had a guy try and kill me right after we jumped back into the free world after a mission hoping to get me before I banked. Thankfully I jumped sessions before he could. Right now I go into invite only sessions, cuts out the problem but limited in it's own way since interaction with players that are not idiots is lower.
3) Get rid of the geneology character creation and have character creation closer to all the other games for a more personalized look, tailored to what people want. Not everyone having a genericly symilar look with sunglasses and different hair.
4) Small issue but having more clothes choices equal to the story game would be nice. Feel too limited in customization in this area.
I realize that the game is in a constant change, just updated again today, though they seem more focused on stopping glitches to be exploited than helping to improve the game experience.
Find myself missing the fun that GTA 2 was....get all the Elvis's and he has left the building, or genocide after a mass killing of a gangs members.