fremen warriors take too long too load...? man they fire 3 times faster than a atreides sniper! i always have lots of them near some scouts, and when the enemy tries to sneak past my defences they usually get executed instantly. This works too as a defence of the spicefields, since many players like to send in groups of fedaykin to kill some harvesters. Up against players with cloaked shit? Use fedaykin, snipers and more units nearby to fire at it. But always use scouts, they r one of the key units in the game, and the cheapest to produce.