Um, how about no. You guys aren't even Metal Gear Solid fans and there's no way Solid would just end in favor of a short lived middle of the road hack n slash.
Actually yes, I'd rather Metal Gear Solid's story just end and maybe go back and tell a Big Boss story or something, I'm not talking about ending MGS just so Rising can continue, Rising can continue being a spin off with Raiden and Grey Fox and I'll still buy them, I'd prefer Raiden though, Grey Fox's armor looks like s**t IMO, but I'm not saying Rising should become the new Metal Gear Solid, it should remain as a spin off series.