Don't know if it can be changed in EFTBP, but keyboard scrolling is smooth in the expansion (The Moon Project/Lost Souls). There is also a mod that lets you play the original campaigns within TMP, but I can't recommend it at least for first play, since the new researches are not taken into account and mess things up. Fat Girls with 4 Plasma Projectors in Leviathan and ED has lasers in the first LC mission... This mod is earlier in the thread if you want to try it.

Edit: An interesting piece of info dug up from a Russian forum... you can save console settings by placing them in a file called "autoexec.con" in the game directory. For example, just create an empty text file and paste the following:

graphrate 60
graph.zoom.max = 1000
graph.zoom.min = 4
graph.limited.view = 0
graph.viewangle.min = 0
graph.viewangle.max = 5
graph.cursor.size = 40

Then save it as "autoexec.con". The settings will be Automatically Executed when the game launches. Tested in TMP but should work in all 3 games.