Do you think The Beatles: Rock Band would have been better if they would've waited and have it support the keyboard controller? 

no

Yeah, no.

Now, if they were to patch the game to allow it, and thus releasing more DLC for it?  
 
Count. Me. In.

Of course. It has more value then.

" Now, if they were to patch the game to allow it, and thus releasing more DLC for it?   Count. Me. In. "

" Maybe if they were a band that ever made any particular use of a keyboard .............  "

" Maybe if they were a band that ever made any particular use of a keyboard .............  "

They used mellotrons, pianos, hammond organs and moog synthesizers ... I'd say they would be better played with a keyboard controller than a guitar controller.

The Mellotron basically was a precursor to what is a "keyboard" today, it had pre-recorded instrument samples played by a piano keyboard, though only 6 instruments or so (brass, flute, two kinds of strings and two kinds of choirs are the ones I can remember off hand, could be something more), the only real difference is that modern keyboards use digital samples and sound banks of at least 128 instruments, and the mellotron used a whole lot of tapes instead, which wore out and got out of tune with use.

TB:RB 2 is coming instead.

" @RE_Player92: I didn't say never, just wasn't ever a very big part of their music, so I meant no they shouldn't have waited for the keyboard controller to come out before they released the game, because there's very little lost from the overall experience by not having it in there. If you follow me. They could potentially have some DLC with songs with bigger piano parts in them I suppose after RB3 comes out.  "

" Now, if they were to patch the game to allow it, and thus releasing more DLC for it?   Count. Me. In. "

" TB:RB 2 is coming instead. "

I was not entirely joking.  There are still many songs they can put in a new game plus and excuse to add keyboard support and a full export from the previous game with updated charts... sounds kind of appealing to me.