I didn't use elemental primaries unless it was a specific burn. I used my Red Hand 90% of the time after TDB and before that it was my LHF. I just don't like the option of not having a primary with a element. If there is a mission or something that has a burn modifier I guess I can pull my under-leveled year one weapons. I'm sure Bungie will decide that was a bad idea down the line, just like how they didn't think vault space was an issue in vanilla. However, instead of realizing that they should've put some in the game they will probably just try and sell them to us for silver. I can see them pulling some bullshit like that. "We know you want you elemental primaries so here you go guardians! For the low, low price of a few thousand silver we will sell you this one time consumable that will allow you to add a element of your choice to any primary weapon. Show us how bad you want it and throw some money at the screen!"