If you dont like VCs missions, then i think you are playing the wrong game genre
Only some of them are horrendously coded to the point that you have to repeat them over and over again, and I'm no GTA noob. I recently started another 100% playthrough of this game and I noticed how poorly handled some missions were. In "Martha's Mug Shot" they give you a Sparrow to follow Candy. You can land the helicopter near the hotel, out of the street, on the grass part outside the hotel anticipating a 5-star increase in wanted level. Then the game moves it for you in the street for some dumb reason. Just to f*ck with you, because otherwise you wouldn't have to deal with the cops and the mission would be too easy, just flying the heli to the studio.
This repositioning of vehicles bullsh*t happens in other missions as well, namely "Recruitment Drive". "G-Spotlight" is also a poorly thought out mission. Some of the jumps are going to be failed 100% by new players (having to start all over again) because there is nothing to suggest that you don't have enough speed to jump to the next checkpoint. Even after you play it a few times, it's still easy to miss a few of them because they are so horribly placed, and at some point near the end you hit a bump and fall off your bike, but thankfully it doesn't matter anymore. A mission like this should have been more fast paced, but the jumps are bullsh*t and they ruin it.
Having said that, I still think the game is really great. I like the new features, missions, characters, and soundtrack. It's a great game, but I still think I like III better. I also made the horrible mistake of buying the German trilogy (III, VC, and SA) version of the game which has some stuff cut out. I'll never buy games released in Germany again. Also, DVD streaming for audio is horrendous. I'm not sure if this only happens to me, but I get lag spikes from the loading and it just slows the game down, ruining the experience in the process. I have a good optical disc drive, it's just the stupid game. It loads the radio stations despite the fact that I installed them on my HDD. I'll have to buy the Steam version.