I remember playing this variant at DSG once (obviously we could not play it exactly because the system was not set up for it).
The idea is interesting, and it might be worth trying. My only cioncern is that it is very similar to standard pente and it may cause confusion about what the normal rules are. But I am interested in hearing hwat others have to say about it.
(gem) Hvis du vil vide mere om nogle spil, kan du tjekke under link sektionen og se om du finder nogle interessante links der. (pauloaguia) (vis alle tips)