Despite an early run with the flamboyant and artistic Dev Emmett, Alfred Tull seemed to be made of more unimaginative, if adequate stuff.
I think we run the risk here of lauding every dead architect, to the point where any course designed by someone who is no longer with us is somehow a "classic".
I've played a number of Tull's designs, and probably the best description of his work is "functional".
If we are to start a complimentary thread on Tull, we should probably also start ones on Edmund Ault, Billy Bill Jr., Joe Roseman, William Gordon, Edward Packard, Joseph Simmons, and a host of other men who built reasonable golf courses that failed to inspire, nonetheless.
Nothing against any of the gentlemen mentioned, but I think we should be careful to not lump their work into some broad category that ultimately diminishes the best designs of the classic period.