Do Silvanus and Mielikki even have clerics? As far as I'm aware all priests of Silvanus are druids and all priests of Mielikki are rangers (it might be different in 5e though).
Deities I feel that should be added:
Auril (Goddess of Winter)
Malar (God of the Hunt)
Lathander (God of Birth & Renewal)
Torm (God of Courage)
Tymora (Goddess of Luck)
Umberlee (Goddess of the Sea)
Waukeen (Goddess of Trade)
I'd also love to see deity choice being tied to domain choice and in some cases to race as well.