The problem with RIT is the travel partner situation. If you assume Quinny out, RIT in, you're left with Princeton and RIT unpaired. That's a 5 hour, 23 minute drive from Princeton to Rochester, so it's obviously not an option. In order to minimize the driving distances between travel partners, everyone but Clarkson and SLU have to be broken up and repaired. You're left with Dartmouth-RPI, Colgate-Union, Cornell-RIT, Princeton-Yale, and Harvard-Brown (solution found by simulated annealing). So no more RPI-Union and Colgate-Cornell rivalry pairs and an overall increase in distance between travel pairs. The Cornell-Princeton pair suggested by FlagDUDE is a four hour drive, a 50% increase over the current long pair (Princeton-Quinnipiac).
Holy Cross, on the other hand, allows you to leave everything alone except Yale-Brown, which is split in favor of Yale-Princeton, and Brown-HC, which is better for distances than even our current system.
If emotions were the only thing involved in picking a new team, RIT is the definite choice, as any conference could stand to use another Upstate NY engineering school (please don't start arguing "upstate"). That said, they just don't make sense geographically. They'd be about as remote as Princeton is now, and would make the OG Tigers have to travel even further.