The thing about basalisks is that they now have a minimum range of three feet. Thats just going to suck if thats all you have. Some of the other artillary varients look cool though, so experiment and find what works best, its a whole new ballgame!
As far as infantry, the answer is yes. As cheep as they are now they should be able to do anything you need them to do with sheer numbers. Or take two squats of veterans and rock a 3 tank squads. Like I said, its a new ballgame, new codex, new rules, new stratagies.
"A true king is never alone, his will is equal to the will of all of his followers."
-Alexander the Great, kind of