If you after an assault oriented army, welcome to the world of the Blood Angels
Some thoughts:
-If you play EA, no drop pods for assault marines
-Forget the Vulcan dreadnought! 15cm range vs 45cm range of the Devastators -in case of Engagement, a Furioso is better
-seriously weak from the air -need some Tbolts to Protect you/your Air Assault units
-for a drop army, you need some Termies
-Try to find a place for a Supreme commander -really annoying when SMs don't activate..
-Scouts+ Stormraven are better than Land Speeders (altough more expensive) -use the unique BA units (not just the Baals)
-Seriously weak AT -if you miss the correct DZ (which is possible in a 2000p game -fewer units, same table size -especially against some "low number of minis" armies -SM, AMTL, etc) you need something to deal with the enemy -if engagin him is not possible with a movement rate of 15cm.. Tanks/arty will eat you