Yea its a huge misconception on how strong the meteor bombs are. It sucks in neutral and will be mainly used for edgeguarding. On average weight its around 90% where it actually puts them in tumble.
You might be wrong about them being bad in neutral. It looks like you can get characters to pop up on the ground at high percents and looks like it has a decent amount of stun. You might be able to get some sweet conversions with this custom. If your opponent techs the spike, you can just tech chase. In fact, I think it might be the opposite with spike bombs being better in neutral and a bit worse offstage. The spike seems to be more effective against characters with bad recoveries on them, and the bomb can be more easily evaded off stage.
Anyway, here are my thoughts on the rest of Link's customs.
Electric Spin Attack- It reminds me a lot of the electric affect the energy disks gave in Majora's Mask when Fierce Deity Link landed them. Could be a homage. Looks pretty useful if you're skilled enough at recovery. I might make some use of it. I wish the Melee spin attack would be in instead though.
Tornado Spin Attack- Great for recovery, but I'm not really fond of it. They should have at least given it a windbox on the ground or something. This custom is pretty lame imo outside of bomb jumps.
Giant Bombs- Pretty hilarious to look at. Very ridiculous.
That "dribble" you can do with them looks great for mind games. Their shorter fuse makes them even better for traps and walls.
Quick Bow- A very decent move imo. I like it. I wonder how rapidly you can shoot arrows in the air though it looks like your range is a lot shorter if you don't charge it. The priority of this move is amazing however, so it'll definitely be seeing some use.
Silver Bow/Strong Bow- I don't know how to feel about this move. You need to fully charge the bow in order to have much use, and even then it can just be dodged/shielded. I need to see more of this custom in order to have a set opinion.
Multi-hit Boomerang- Lots of combo potential here with that lock-down effect. Especially in teams. I like this custom a lot and it will see lots of usage from me.
Smash 64/Project M Boomerang- This is easily my favorite custom move from Link. Lots of possible follow-ups with this one. Especially on it's way back. I would really miss this version of the rang if not for its inclusion as a custom move. I'll be switching between this and the multi hit rang frequently, but I'll be using this one a lot more in singles matches.
Looking forward to trying these out although I'm a little disappointed that Melee spin attack isn't an option. Link for sure won't be low tier this time around. Very excited!