Lets face it, no one takes logi frigs because they're so fragile and don't actually do a lot. They're moderately useless in small gang pvp because things are over too quickly for their small bonuses to have an effect, even if they arent primaried.
I've seen people prefer spider tanking dessie fleets, and you know something is wrong when a fleet doctrine doesn't involve having frigs to RAR.
What is wrong with logis, and to a lesser extent, T1 ewar frigs? They're fragile as hell and don't provide that much bonus. They're difficult to use anywhere except in open space where the ewar can at least hold 60km off with superior locking range to land their stuff while avoidng being locked back and shot.... until dessies with sebo (svipul) or cruisers with light drone spam arrives. You guys ever try to fly a crucifier recently? With such low PG, few lowslots for an amarr frig, and massive CPU, they cant really tank and waste a lot of CPU with a full TD build and 1 prop.
The logi frigs are even worse off, because not only are they fragile, but must be easily within range of all attacking enemies, while at the same time not producing much RR effect.
Logi, imo, should have the options, slots, fitting, whatever, to be tanky enough to survive in close combat, while producing an effect similar to an unbonused logi of the next class up.
Frig logi = unbonused cruiser RR.
cruiser logi = unbonused battleship RR.
And so on.
A cruiser at the moment can be a cheaper and longer surviving logi, even without bonuses, and with 2x more transfer rate to a frig logi.
This needs to be fixed unless the plan is to scrap those frigs altogether.
a crucifier? yeah i fly them, and sentinels, with buddies in pvp, its a GREAT ship for small gang fight, and jumping a cruiser or battleship with a gang of 2 or 3 frigates.
no, frigate versus frigate fleets are not the place for EWAR/logi frigs, but they are INVALUABLE when hunting larger ships, logi keeping frigs alive versus drones, and ewar frigs keeping larger guns from coming to bear on fleetmates (and in the case of one time where I was using a sentinel and we jumped a hyperion, keeping its reps from perma-running). and as for fitting the crucifier, yes, its a little squishy, but it shoudl be, i LOVE its midslots, honestly dont even use much in the lowslots.
so just saying, your example of the crucifier is bad, and logi/EWAR frigs do have a point, your problem is they dont do what YOU want them to do.
and again im gonna say this, LOGI SHOULD BE SQUISHY, saying "it shoudl have the tank to survive in close combat" is basiclaly saying "logi should be one of the harder things to kill on field", which emans all you want is mechanics to even more reinforce N+1 alpha-shot fleetplay