Probably Kiva's.

Hibiki's second opening. Not objectively terrible, but yet another reminder of how everything I loved was being ruined.

You are dead to me.

I can't tell if I love or hate Agito's theme song. It's so hilariously cheesy but I can't tell if that is a good or bad thing. Definitely not a huge fan of Life is Showtime though, it just doesn't have any kick to it. Beyond those two though I legitimately like most of the other theme songs.

I don't really have a least favorite, but then again I haven't watched too many Rider shows. My FAVORITE, however, is Wizard's. MAGIC TIME do dodododo.

My least favorite is probably Ghost. Not because it's a bad song, I listen to it quite often, but because of all theme songs it sounds the most generic to me. You can play this with any high school anime and it would work.

Of the Kamen Rider Themes I've properly listened to, I'd have to say my least favourite is Kabuto (I sometimes end up comparing it with Alive a Life and Round Zero - Blade Brave)... although Den-O, Kiva and Hibiki were dangerously close.

Favourite is Journey Through the Decade, hands down, with Kuuga and Black RX tied for 2nd.

The theme songs that do not work for me are Super-1's opening and Hibiki's 2nd opening(even the regal voice of Fuse Akira could not do it justice).
Just doesn't.

Best opening theme songs are:
V3 - Tatakae! Kamen Rider V3
Black - Kamen Rider Black
Blade - Round ZERO~BLADE BRAVE, Elements
Hibiki - Kagayaki
Kabuto - NEXT LEVEL
OOO - Anything Goes
Fourze - Switch On!
Gaim - JUST LIVE MORE
Drive - SURPRISE-DRIVE

Best ending theme songs:
Black - Long Long Ago, 20th Century
Black RX - Dareka Ga Kimi Wo Aishiteru
Shin - Forever
ZO - Ai ga Tomaranai
Kuuga - Aozora ni Naru
Agito - Believe Yourself
Ryuki - Hatenaki Inochi, Revolution
Faiz - Dead or Alive
Blade - Take it a Try
Hibiki - Shonen yo
Kabuto - LORD OF THE SPEED
Den-O- all of them
Kiva - all of them
Double - Cyclone Effect
Fourze - Giant Step
Gaim - Ranbu Escalation

the rest are mediocre.

Do you think August 1st will be the press conference of Kamen Rider Ex-Aid?

I think it would be pointless if they released a bunch of magazine about Ex-Aid on August 1st because we already got a bunch of magazine about Ex-Aid!

Cross my finger for August 1st to be Press Conference of Kamen Rider Ex-Aid :)

Like Garo gaining anime versions, will Kamen Rider do the same? But with their own versions of the stories and riders that weren't made live action?

Probably not. That would mean it would compete with the live action shows and Toei wouldn't want that. There's already a long running manga, Kamen Rider Spirits, and Toei flat out refuses to let it be animated. It follows the original 10 Kamen Riders fighting monsters in a modern day setting and I think animating it would be the best way to get the actors back to their roles on a regular basis - save for Stronger, whose actor passed away.