If its any comfort, with the right market, that frame set would fetch enough to cover the purchase of an IRO or similar. Personally, I think you made the right choice in keeping its braze-ons. If you're that hard for a lugged Marinoni track frame, give them a call? They do braze frames up there, and I'm sure they can still do you up a custom lugged steel frameset.
It's kind of funny how Marinoni is a semi-hidden secret: they make affordable high-quality custom bikes right in Quebec (Steel & Ti - CF is outsourced), but spend nil on marketing. Even more lulzy when you think that fools pay $2k+ for custom steel from shops like Vanilla when Marinoni will do it for under $1k CAD (~$800 USD).