That situation i would approach any situation where a spawn in close proximity to a close-range suppressor (formerly called light deviant automata suppressor) fairly similarly to the battlecruiser rogue drones named 'Spark’grip Tessera. aka dont deploy drones as it will loose you a key asset for little reward. for me the key to leshaks is to react early upon warp-in. burn (heat the ab) towards them and once you are under their optimal (~63km) and reach a distance of around 35km damage starts to tape off. Some manual piloting is very beneficial if you are uncertain of the limits of your active tank. Their tracking is far superior to drifter/rogue drone battleships where this tactic is much more effective, but i start firing as soon as i reach 2nd fall off (~28km with null ammo) and use an overheated faction web to draw the first ones in asap.
I will preface this point by saying the leshak spawn is the spawn ive LEAST encountered in T5’s so far just due to RNG. the renewing types and RR can be broken by spreading them apart. ive used http://hoboleaks.space/ heavily to understand the limits of each npc and that knowledge influences strategy regarding various spawns. Quick thinking is key, as is simple reproducive practice. the more you do the more you understand threats and can speed up threat isolation and primaries. Just like the old vedmak rush spawns, targeting the wrong one would lead you to die to timers. The ability to chose the right initial primary and work through the spawn based on threat analysis is essential as is knowing the limits and intricacies of your ship and chosen fit.
I for example do no use MWDs but i know @Dark_Engraver does with great success. This just shows that there isnt JUST ONE solution to these issues, and it is player action and skill that allows success in this content - which proves it is balanced. We also use different ships most of the time.
so yes @Alderson_Point while i admit my earlier comment was particularly polemic, it is not arrogance or self-impressiveness that drove me to make such comments but disappointment that people are deciding and stating that the content is broken or DOA when it isn’t. If anyone asks me for tips, like @erg_cz ingame or on the forum im happy to give them. But as @Dark_Engraver said;
Fits or ships will only help so much. Both myself and Dark have spent a lot of time testing and thinking and working to achieve personally acceptable success records. And honestly top top end PVE content should require some of that time/effort dedication for reliability.