Yea, I'm leaning more towards Goblit's idea, I mean I've only gone as far as Freya (who I've killed only once)
I mean it seems maybe a bit illogical to me to attempt hard modes for bosses we haven't killed (or for some seen) in normal mode. I mean Aves has reached 9/10 of the proto drake but I'm sure (under my assumptions at least) that he got the achievements after first learning them on normal and after feeling comfortable with it going to hard modes. It just seems to make more sense to me to complete on regular first as a guild which we haven't done yet. But since we didn't finish it before ToC came out we kind of just let Ulduar just wallow there and mostly ignored it from progression.
Also yes, I like doing things as a guild too.
Also, have we updated the gear requirements in the raiding spreadsheet or are those still from Naxx 10/25?