I personally, being one of the Elysian players, don't mind the Warhawks at all. I don't look at them taking the place of the Elysians - so no hard feelings from me.
Now onto drop troops - if you want do deep strike the whole army, just take Storm Troopers instead of Grenadiers (same stats, except they can deep strike). 3 units of Storm Troopers (all your elite choices, alternatively you could take veteran squads if you take the vets doctrine), plus the 2 platoons that your required to have in a normal guard army should give you a really solid base of troops to start with.
And please, no tanks in a drop troops army - unless of course your not going to be deep striking and puttting everyone on the board in a normal fashion, then its cool.