I'm the mom of a swaddling addict (paci addict too, but that's a different story, like you said :wink: ). Tyler has been swaddled since birth for naps (we never did it at night, he'd get too hot and just never needed it). Around 3 or 4 mo, we started the Aussie swaddle with a bedsheet cut in half. It was AWESOME. It's hard to master (I practiced a lot on a huge teddy bear), but once you have it down, it's hard to get out of. We did that until he was old enough to find his paci himself, like 8-9 mo. Even then, we gradually weaned him to a regular blanket wrapped around his legs only...and he naps like that to this day (he's almost 21 mo). He doesn't stay in the blanket anymore, but the act of swaddling as part of our nap routine has a strong sleep association for him and helps him wind down. This was a huge, huge help to me on many plane trips where he needed to nap. It was really easy to re-create a big part of his sleep routine and signal to him that it was time to sleep.
I don't think swaddling is bad at all, and I don't see why I'll ever need to wean him of his blanket wrap. I'm pretty sure he'll outgrow it on his own. As an added plus, he was never interested in a lovey, but now his swaddle blanket acts as his lovey at night. I say give it a try, and keep swaddling as long as she wants!