Part of Fallout is coming across things you would not at all expect to see in the game, well we know Marcus was in the game & was a HIGHLY likley character to be in. Well I think id be cool to come across a Reaver character (a cool faction in Fallout Tactics). Like just one Reaver with the only set of Reaver armor.
I do not believe I have heard anything about Fallout Tactics even mentioned with New Vegas but I could be wrong, I am sure a developer has said yes or no if there'd be anything that was in Fallout Tactics in New Vegas. Tactic's takes place around Chicago and not around New Vegas but still be cool to see some kind of reference to the game in New Vegas.