We decided to try Lost Island hard mode again and were able to down the droid boss after figuring out a strat that worked fine.
Just as an FYI, sometimes a 'guide' is the worst thing you can follow in these instances. People kept referring to a 'soft' enrage that happens at 20%-30%. So we kept attacking this boss from the idea of how to survive the last 20-30% while he is 'soft' enraged. We found that this was basically impossible as he instant casts full size bubbles that do massive damage. Well, the guides all steered us down the wrong direction. This is quite simply, a DPS race (big surprise). Once we figured that out, we downed him quickly and he wasn't difficult. It was a very smooth and easy fight. I did some DPS, killed the adds mostly solo while the DPS stayed on the boss and I kept everyone healed. We got him all the way down to 20K before he even enraged and about 10 seconds later he was dead. Health pool of everyone when boss died was at 80%. At no point during the fight was anything 'frantic' it was smooth, controlled and easy. No white knuckling or anything like that once we figured out DPS, DPS, DPS and DPS.
Jedi Guardian (Columi Gear) 20K HP
Commando Gunnery Spec - (Tionesse geared) 16K HP
Commando Gunnery Spec - (Tionesse geared) 17K HP
Commando Combat Medic - (Columi Geared) 20K HP
Summary: My opinion was that this boss was too difficult when we first tried this instance, but that was because we didn't fully understand the mechanics. The biggest setback was thinking he was going to enrage no matter what at a certain health, so we actually held back waiting to DPS for when this happened. Most of our failed attempts revolved were the result of that fallacy. We tried this boss about 15 times total before figuring it all out. I dare say, we would have figured it out much sooner if we merely ignored the guides.
This is definitely doable for people who are not Rakata geared. With that said, you may need to 'mod' your tionesse and columi level gear to fit the exact stats that you play style requires. Some of the 'default' itemization on the tionese and collumi is horrible, it definitely needs to have mods and enhancements ripped out and put in with the right stuff. I can tell you that myself and the tank know how to theory craft and get the most our of our gear, but our two DPS do not. I imagine we would beat the enrage timer all together if they itemized their gear better.
Keep in mind that while we have ranged DPS, we didn't have extra interupts for when the tank went 'oops' and we didn't have the ability to interupt his AoE. So, as always, class makeup has certains pros and cons. In some ways the ranged DPS makes it better, but the lack of interupts makes it so they take more damage which puts more strain on the healer, and or stops their DPS from DPSing so they can heal themselves. It is all a trade-off. It was fun.