Consider that you will get much better advice if you include:
1) Your usual list and available units
2) Your usual opponents and rough lists
3) Your usual play environment (terrain/missions)
4) Your overall playstyle
Without this information, any suggestions will be more random guesses than useful advice...
Randomly throwing out:
Should I use more heavy weapons in my infantry squads?
Should I equip my transports with certain weapons?
Should I ....etc?
Without the context of the rest of your army and how you play it will leave people guessing and likely either moving on to another Thread, or giving you advice that isn't useful.