Open Question: Now that I've refinanced, any reason not to accept a credit card offer?

I was refinancing and stayed absent from accepting any assign offers over the time 18 months. Now that the refinancing is complete (at a rattling beatific rate), I was intellection of taking plus of a one-year, no annual gift substance for a Continental airlines assign card. I already hit whatever miles and with the 25k included in the offer, I could intend a aggregation ticket. If I'm not thinking to refinance or intend added mortgage for a pair of years (at least), is there any think not to intend the assign card? I don't stingy to go overboard, but if I were to intend 2 cards in the incoming few months, how such and for how daylong would my assign be strained as compared to meet effort 1 card? Thanks for your knowledge.
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