Ive done a couple using only Hallertau M, 90% pils 10% wheat and i think its a lovely beer, not lacking anything..
I recently did the Saison Vautour clone from BYO's american Saison article and it came out quite well.
76% Wey Bo Pils
17% Wey Rye
7% home made candi sugar.
IBU 26
Ger Hallertau...