Isolating a player base and not making content for them is not the way to go. Raiding goes hand in hand with MMORPGs, if you don't like raiding then maybe move onto another type of game?

I don't raid, but the problem I have with FFXIV is the way they have been doing gear upgrades as currency grind. Gear upgrades should be in dungeons and hard mode dungeons; then you move onto the raiding and the raiding gear. Much like how it was in Coils in 2.xx, I don't know why they made dungeons and raiding gear almost worthless in 3.xx.
I am just hoping they will be going back to the old way of getting gear for 4.0.

Getting rid of raiding is not a way to go, it's just like if you shouted to remove PVP from the game. Sure I don't raid or PVP here(better PVP games XD) but you cannot not have those aspects in this game.