Lets make Tahm better!!
I like the Tahm idea, im sure alot of you do to especially us tankers. But lets be real, hes lacking compared to other top tanks or supports. Lets compare a few other champions kit to Tahms kit in the role he was design for.
Gap closing/initiation. Thresh, Leo, Blitz Janna, Braum, Maoki, Morgana, are just a few named that have better gap closing/initiation. Lets Face it, you miss with his Q and your standing around for 8 seconds. An idea for this problem would be to make his Q and W one in the same!! Get it? Risk reward, You Q target and it acts like a frog snapping his tongue for a fly and quickly swallows. I mean who would you rather have on your team, Leo lance, Blitz grab, Thresh Hook, Maoki dash snare or Tahms Q lash and most of the time you cant even get close after that.
Lets talk about His W, Swallowing. This ability is the most annoying when not in lane. Basic attack 3x just to get a stun off or swallow. Okay, problem is if your trying to swallow your target, you have to fully commit and waste 3 seconds to get this ability off. And we all know how long 3 seconds when team fighting. Heres the HUGE kicker on this. You spend 3-5 seconds on basic attacking this target of yours to swallow him, in my experience(30 ish games) %40 of the time he gets out of range/ or dies/ or your adc dies in that time spent chasing your target. So the HUGE kicker is that your CC'ing yourself for 3-5 seconds trying to get basic attacks off, on top of your 335 foot speed and hes outta range or gone. Again, make Q and W one in the same. Would be perfect fit. I would say remove W all together and put in area effect with the size of GPs ult maybe a fog of war gas or toxic gas berp. Some sort of team initiation.
E is fine, no problems really.
R... well, again, other ults for his role..Leos ult, Bruam has really nice ult, janna, lulu very nice ult. His ult is fine if his other abilities make up for it.
So i played 30 games with him all roles, 1/2 ap 1/2 tank, jungle, full tank. ya, main problem is his Q and W for me. Hope this was helpful! :)