I have only made 1 pumpkin beer so far and I only bottle, however, I sampled one last night which has been conditioned for about 1 month, and I would say that other than the green flavor, I think it is going to mellow out very nicely. I spiced the bejeezus out of it, I added at flameout, and added more to the secondary. There is just a hint of pumpkin flavor, which I hope time will help to bring out rather than diminish. FWIW, it was an extract brew, I was not setup for AG a couple months ago, but I am thinking of brewing another Pumpkin beer next month (AG) and putting it away until next year. My thoughts were to mash some of the pumpkin and add some to the boil. Personally I want pumpkin pie in a bottle not a beer that has a pumpkin accent. I know that if it doesn't taste like beer anymore then you've over done it, but when it comes to pumpkin beer I want a thick sweet pumkin flavor and a hint of beer. To each their own.
Like I said I spice in the secondary, and it came out well. IMO, I would do the tea.