So I got this e-mail as a former customer of Segadirect.jp saying that a new replacement has been made at http://ebten.jp/sega/ It's nice that they named the store after my favorite style of udon.
I'm too tired and sleepy to try reading/translating the whole message to see if the old Sega Points are still valid. This reminds me that I've barely touched my PS2 Nights game I got earlier this year with my remaining points...
Undamned is the leading English-speaking expert on the consolized UD-CPS2 because he's the one who made it.
Don't get your hopes up. This is merely a Sega-section inside the Enterbrain online store. Hardly the same thing as Sega Direct, and surely no "rebirth".