I used to be fairly hard core back in the wrath days and quit raiding when cata dropped. For the most part I tried to maintain 100% raid attendance, my gear was always properly enchanted, gemmed and reforged and my spec was correct when that actually mattered. I would also always keep up with the latest strats on the bosses so even with new content, I wouldn't be going in completely blind.
I am looking for a guild that raids at least 3 nights a week. I wouldn't expect be to offered into a guild that is currently doing heroics considering my gear score is only 478 and I have only done the raids in LFR, which isn't raiding. However I am looking for a guild that can consistently clear content and has dedicated players that are focused on progression but just needs 1 or 2 more dedicated players to fill out their ranks.