An argument for a smaller keyboard (and this is definitely a personal thing) is that I try my hardest to avoid using keys that are more than one key away from a finger in its resting position anyway (why---I really don't like having to move my hand physically, and I'm willing to pay the cost of additional latency with having more keys gated behind modifiers if it means I have to move my hand less). My day-to-day keyboard uses QMK, so it's really possible to make this work.