As I editing Russian tegs for games now, I spotted strange "genre" - "text-based". It looks logical for first sight, but after closing examination don't stand the test. Because we already have same-named theme, and main genre never "text-based". For IF it is Adventure, for roguelikes - RPG, for something like "text pacman" - it is action.
Actually, speaking about theme, it is not theme also! It is perspective - just as CGA-only.
So maybe it worth to kill it from both classifications (genres and themes) ad re-create as perspective?
(Real problem for me, actually, is RPG-hybrids as Strategy/RPG like X-Com, Adventure/RPG like Elvira or board/RPG like Hero Quest. Maybe it worth to made additional RPG theme?)