Perhaps you could add compatibility if that's not a problem?

If it edits the map file itself, then no. The way I made this fix was editing the ep1_c17_06_l_0.lmp file, which is what Valve uses to patch the entities in the level without recompiling. However, this requires ep1_c17_06.bsp to be unmodified, so if you have any mods that edit the map file itself, they will most likely be incompatible with this one.

will this work with the episode 2 citadel explosion mod

Any chance you could merge this with the "Alyx Line fix" mod? Alyx repeats her line once you get on the trains, and i don't think i cant use that mod with this.