Steel

Don't dismiss Sentinels just yet. My Elec/Bio/Mu with Intuition Radial and frankenslotted ATOs (for 5x the range bonus) has 117ft range on standard ST attacks and 78ft range on TAoEs and cones when in Offensive Mode. My new project is a Psy/Bio/Psi, which iirc will have 138ft range on ST attacks. On my phone, so can't check Mids, but I think 90-95ft range on AoE. These builds still can't compete with most of their Blaster cousins*, but the playstyle is delicious. ETA: * that are build for range

Superhero Tech And Resource Team? But I think I prefer leaving it undefined btw, I'm just glad it's no longer called P2W.

I didn't bother getting the City Mod Installer until a few months ago. Maybe us older folks are just more reluctant to change, maybe I expected it to be more of a hassle than it actually turned out to be, I don't know. But I'm glad I did. Just download this software, you won't regret it.

I'm guessing it's Crey? Some of their units use Hallucinogenic Gas to confuse, perhaps one of your team members was good at enddraining, didn't notice they were confused and unintentionally sapped you instead? Crey tanks Taunting may explain not being able to target anything.

Start here: https://homecoming.wiki/wiki/Attack_Mechanics

A Stone/Bio Scrapper with procced out AoEs (including Energy Torrent). So. Much. Fun! Level 48 so far, and besides the procs he's frankenslotted with mostly yellow IO's, but already feels incredibly powerful. Not a character I'll be taking on another Synapse, I was on a great team last night and felt kinda bad about the knockback from Fault. Next project will probably be an Electric/Axe Tanker, for exactly the reasons @Mythical Creature and @StriderIV mentioned. Hardcapping most resistances except Toxic and Neg, with lots of procs and 100% slow resistance, should work pretty well.

Martial Arts. It performs really well in Ston's melee powerset comparison thread and I feel it really complements Bio/ in particular. You can slot a FF proc in an AoE and a ST attack (the latter where you probably want to pay the kb2kd proc tax), and Storm Kick gives you +10% Def(all). Highly recommended.

A Shield/Axe Tanker with Mu ancillary would probably be the closest approximation. ETA: I did consider War Mace, but if you want to throw your weapon like Cap in Endgame then you want Cleave for game mechanical reasons, but aesthetically War Mace is a better fit.

I suspect Mids' window is minimized by default, so maybe right-click on the icon and maximize it again?

Third place goes to Jab. Or possibly Kick, either are worse than Boxing.

I'm the complete opposite, I love my Staff/Inv Stalker but don't care for Staff on other ATs. He used to be a /WP too btw, until in his early twenties I realized Stalkers don't get their endurance tools... so I rerolled him. Never doing any/WP on a Stalker ever again. Worst build combo that I tried would be a Rad/Inv/Leviathan Sentinel. I think someone suggested this combo on this forum a long time ago, as a build that could fit in the most Kryptonian-like abilities. The idea was to only take X-Ray Beam and the T9 from the primary, and rely on the full Fighting pool plus KO Blow and Arctic Breath from the epic for damage. Thankfully I tested him on Brainstorm first because as expected his DPS was anemic and he never felt Super. It kinda works in theory but it takes the self-gimping-for-concept a bit too far. Not recommended.

You may want to consider Energy Aura if you prefer defense over resistance-based armors. It's not that hard to softcap S/L/F/C/E defense and unlike ElA you'll have kb protection while hoverblasting. Power Drain is similar enough to Power Sink too if you want to go the sapper route (PD saps 33% in a 12ft radius, PS saps 40% in a 10ft radius).

IMHO, Incarnates broke the game. I would have preferred it if the original devs had limited the use of Incarnate powers to Incarnate content, with just the alpha slot (and level shift) available for regular level 50 content. But it's too late for that now.

According to this post from Bopper, the FF proc can queue up when there's already an instance of the buff running, but appears to do so only once. It doesn't stack in the sense that it would double the buff (i.e. +200% recharge), rather it doubles the duration, but with the caveat mentioned above

It has a chance to proc on each target, thus granting the recharge buff, but the buff itself doesn't stack.