I still own every other GT game. I like to collect the cars and race time trials. I can take 1 track and spend the entire day on it tinkering with 30 different cars and all the different subtleties of both the cars and the tracks. I would also race an entire series over and over to get all the different prize cars and color variations in past iterations of the game. License tests always also meant something to me. I still remember how I felt when I golded the final S license test in GT3 (Toyota GT1 on cote d'azur for those who still wake up in a cold sweat thinking about it

)We play the game differently and for me this game has a serious problem in allowing me to play the game I always have and the way I want to. This is what has kept me playing this game for years and now hoping they get this fixed so no GT6 will not be a no brainer for me this time around. PD has some serious issues here in the way I like to play the game and collect cars.
I don't care anymore if they take away trading, I want to be able to collect all the cars the way I want to. Grinding was tolerable in past games because you knew you were going for a specific car / color and could sell copies to get more of the cars you want within a reasonable time frame.
However my opinion on this is no different than yours...it isn't worth a damn to someone else and the way they like to play the game.
I really do love this series but GT5 to me is more alien than any other iteration of the game...again to me. To each their own