But considering Mr Smith's pop cap changes he lorded here made it in I think it's safe to say he had input. And if he had the input for such a wide reaching pop cap change he could have added a mortar and snare after that long list of UKF nerfs the "community team" introduced and lelic rubber stamped.
No, he couldn't. You make it sound like Mr. Smith had a load of Balance Team Points or something that he spent on popcap changes. That's not how it works.
The pop cap changes are balance tweaks. Highly impactful balance tweaks, but so is changing a core infantry unit. It's tweaking numbers up and down and Relic doesn't seem to have any issue with that.
Adding a proper snare and mortar to UKF is changing the design of the faction and Relic apparently is
not keen on that. Every variant of UKF snares under the sun came up and Relic reportedly shot them all down.
If Mr. Smith really did have the clout to push redesigns through then he'd have probably got the Stuart/AAHT swap in.