There was a hero druid tribunal not too far back, cant remember the name. So it is possible and has been done.

Druids are not rangers by any means. Granted, most of their stuff is outside, wild area, weather, and moon cycle based.

I believe some nature-esqe abilities like entangle, COW strength, and treant strength, might be affected for
the whole stand point on what wildfam particularily mitigates. However, you will not neccessarily be handicapped, just
make sure you know your stuff and prep outside of class-ability if you fight other druids. I personally get my ass kicked
every time I try to PK another druid, and have lost some sweet sets that way. Rangers in general will not be a hard match
to quickly kill or cripple regardless of wild time, in my opinion. With new subsets of rangers, firegiant savages might be your hardest thing to deal with as far as the ranger class, from what I gather.

It's totally doable, but you are going to spend a lot of time (If you want to carry Herb Sets that you need, rather than what's close by.) leaving jurisdiction or whatever to get these, as well as your COW if you want to keep one around every 24hrs.

Druids are hard enough to play in their own homeland, and tedius as all hell to stay strong, so if you want a challange, you can do it, and still be deadly, but it's definately not going to have very much down time.