Yeah... like FMA! It would be really great! XD
I watched this OVA as well, right after I finished the anime, and I love it! I think it's excellent in telling about Kenshin's past! I got like "I want more!"
With it, the only thing that's missing in the anime is the development of Enishi's desire for revenge, his redemption(?) at the end and, of course, the fights that come in this process. =)