Yeah, 'stealth strong' is something that gets asked for a lot on these forums but lots of people read it as 'horribly broken'.
Druid basically writes itself. One thing I might suggest is having a theme, and researching spells mostly from that theme. It'll make your GM happy, and druid lends itself naturally to it in any case (wind druid = quite effective battlefield controls that hold things still for boosted blasting, animal druid = necromancer but with living things (dinosaurs!), earth druid = immune to anything if there's dirt around to glide in, best druid battlefield controls, plant druid = good mix of BFC, debuff/kill, and minions, hell even use your one special thing on that feat and be 'undead druid'), you'll get nerfed less than if you try to cherrypick and it'll probably be more fun. Problems are more fun when you restrict yourself. 'How do I solve this orc fort with every druid spell' is less hard and interesting than 'How do I solve this orc fort with 1d20 dinosaurs per round?'.
EDIT: Hell, if you wanted to go with 'Cold Druid' he'd probably let you research new spells(create new spells) along that line, and if you defined 'Lord of the Uttercold' as a feat chain starting with 'undead druid', you'd have some hilariously broken stuff on your hands and an interesting theme. 'Animate Animals', anyone?
