Now, as to why I think it's a good idea, and why I think you're on the forefront of a trend. Starting games at the point where the characters are so fragile that they need to be handled with kid gloves is less than fun. If slightly more durable characters allow you to have more fun right away, that is, in my opinion, a good thing. Given the number of people who start games at Level 3 now, I suspect that Fourth Edition, when it comes out, will attempt to create characters that aren't quite so fragile. If almost nobody's playing Level 1, there's no reason the game should start there. I think the designers at WotC realize this, and I think that's WHY Saga gives the hit point kicker at Level 1. Because if you needed 3 hit dice to be able to deal with stormtroopers, everyone would just create 3rd-level characters to start with. And if nobody plays through them, what's the point of Level 1 & 2?
Basically, it's beginning to seem that if your goal is to keep the game fun, the progression curve needs to be flattened out a bit. People talk all the time about D&D's "sweet spot." Characters need to be a little more powerful to start with and have that advancement level off as they go up in level. The designers (at WotC anyway) are starting to realize that the untapped design space for "cool stuff" is in the lower-mid levels where most gaming takes place.
We even have a few folks here who've launched a project to preserve and extend the game's "sweet spot." So I applaud you for this decision.
Personally, I am of the opinion that when Fourth Edition materializes, it will be designed so that you'll be at most a few levels from reaching play that feels like the sweet spot, and be able to stay there for most of the campaign.
That expands the fun. And that's a Good Thing (TM).
My two coppers.