Look at it this way, not only there's the fact that he is lucky to be in the game at all, given that the Dawn Brigade, the remaining Greil Mercs, the remaining Laguz Royals (it's Skrimir, Kurth, Rafiel for the banner and maybe some kind of related GHB? Izuka? For all the bad things he does to Laguz? Dheg is mythic material obviously) are all likely/guaranteed to be the next three New Heroes banners for Tellius in any order. Which means the first free slot for the New Heroes banner would be in like 5 years.
You could have had to wait 5 more years to get him in the game at all. Instead he is here now.
But also, when five years finally pass and all the obvious thematic banners for Tellius have been done, the three base versions of the Laguz Emancipation army + Attuned Sanaki (she has a connection to Tormod and is popular in Heroes. The GHB can be a senator idk) sounds like one of the few thematic banners they would think about doing.
Which means not only Tormod, but his buddies two would habe two versions in Heroes by then.
Not too shabby considering that some very popular/with vocal fanbases characters like Kaze from Fates and Sumia from Awakening still can't seem to be able to get a second version after YEARS.