Legacy moves worth powering up?

C/SoB...but a gym rework may change your mind.

I have a similar list that I am patiently sitting on until we know what the future holds.
The ones you have that are worthy in the current meta will already do the job...so perhaps be patient for a little while.

I feel like this is more bragging than asking a serious question.

I use my C/SoB Egg a lot against Blisseys, and for Snorlax. No question of value there. Then I would pick the Charizard. It would be fun to have, and if they do a gym rework with "type" based gyms and a limit per species, than that would be an excellent defender. Hard to dodge that DC. Last for me would be the C/SB Egg. Excellent defender moveset as well.

Personal Experience, Kabutops is very strong to power up. F/SE is very awesome. Gengar wasn't so bad, need some doge skill but he is worthy to power up and eliminate gym defender.

I would Power up your C/SeB exeggutor because with 96% ivs he should be able to sit atleast non on the bottom of gyms (atleast in my area) but I bet some people will say C/SoB but you dont need an attacker above 30 so I wouldn't.

Gengar to the max. Wish I had one!

Kabutops...oh Kabutops. I want that one so bad.

Worth powering up:
Exegg C/So -- Good attacker
Exegg C/Se -- Hard hitting defender, and an okay backup attacker. Good attacker if you are attacking with other players.

Okay, I guess, if you like them:
Gengar Sh/Sh -- Reportedly a strong glass cannon generalist, but there is no ideal matchup to throw it against.
Charizard W/Dc -- I suppose you could use this against Dragonites if you don't have any high CP ice types or Gyarados with B/Dp, B/O, or Dt/O.

Not sure why:
Kabutops Fc/St -- This always felt like a weird pairing to me. The pokemon weak to rock that I'd want to use Stone Edge against (flying types and fire types) are also resistant to bug. Maybe if Lapras was still in gyms more commonly.

Exeggutor C+So - yes for both attacking and defending. Should a rework come worst case is that Confusion only becomes good on defence, which was how it used to be.

Exeggutor C+Se - If the CP formula or base stats are changed, or the fundamentals of gyms are changed so that CP is no longer the only important stat, this is the best defending moveset on Exeggutor. Unfortunately a low max CP makes this not worth powering currently.

Gengar SC+SB - While technically a good generalist attacker, it doesn't really excel, even compared to the other glass cannons such as Alakazam, Espeon, Flareon et cetera.

Glass cannons are often used against Blissey or Snorlax to do most of the work while a second Pokemon finishes them off, but Gengar's ghost moves make him do reduced damage, and his poison typing makes him take increased damage against Zen Headbutt, the better defending quick move on Snorlax and Blissey. Basically it's the least versatile and the weakest glass cannon. But it does look the coolest.

Charizard - Not really. A bit too high for prestiging and less damage compared to other maxed out attackers.

Kabutops - Useful for prestiging against fire types in it's current state. Fury Cutter may be resisted but it's only used to build up energy anyway.

OK, I have a different suggestion. WA/DC Charizard is my favorite moveset. Both moves are terrific. This mon is awesome against Dragonite, Exeggutor, and Snorlax. On top of that it's 100%.