Vocaloid Characters that Should Get a V5 Update

Now that Yamaha release Vocaloid 5, Miku will probably get updated. However, there are other Vocaloids who could get enhanced voicebanks, new voicebanks, and new languages. Some Vocaloids are even due an update. Tell me who should get an update.
The Top Ten
1 Len Kagamine Len Kagamine is a male Vocaloid created by Crypton Future Media. He is the most popular male Vocaloid of all time. He can be bought with his counterpart Rin Kagamine. He is voiced by Asami Shimoda.
2 Gakupo Kamui
3 Rin Kagamine Rin Kagamine is a female Vocaloid created by Crypton Future Media. She can be bought with her counterpart Len Kagamine. She is voiced by Asami Shimoda.
4 IA (Vocaloid) IA is a humanoid persona voiced by a singing synthesizer application developed by 1st Place Co., Ltd., headquartered in Meguro, Japan. They use Yamaha Corporation's Vocaloid 3 singing synthesizer technology. Her voice is sampled by Lia.
5 Una Otomachi
6 GUMI (Vocaloid) GUMI is a female Vocaloid created by Internet Co., Ltd. She is the most popular non-Crypton Vocaloid of all time. She is voiced by Megumi Nakajima.
7 Yukari Yuzuki
8 Flower (Vocaloid)
9 Luka Megurine Megurine Luka (巡音ルカ), codenamed CV03, is a Japanese VOCALOID developed and distributed by Crypton Future Media, Inc., and was initially released in January 2009 for the VOCALOID2 engine. She is the third release of Crypton's Character Vocal Series and is a Character Voice VOCALOID. In March 2015, additional voicebanks and an upgrade to the VOCALOID4 engine were released... read more
10 Akari Kizuna
The Contenders
11 Fukase Fukase, is a vocal developed and distributed by Yamaha Corporation for Vocaloid 4. He is voiced by Satoshi Fukase, the lead singer of the Japanese band, SEKAI NO OWARI.
12 Hua Xin
13 Ryuto Ryuto is a male Vocaloid created by Internet Co., Ltd. He is the mascot of Gachapoid. Despite not being a failure, he generally has negative reception. He is voiced by Kuniko Amemiya.
14 MAYU (Vocaloid) MAYU is a female Vocaloid created by EXIT TUNES Co., Ltd. She generally has mixed reception. She is voiced by Mayumi Morinaga.
15 Lily (Vocaloid) Lily (リリィ) is a female Vocaloid created by Internet Co., Ltd., done in collaboration with Avex Management Co., Ltd and YAMAHA Corporation, and was initially released in August 2010 for the VOCALOID2 engine. There has since been a second installment developed for the VOCALOID3 engine and dubbed V3 Lily. She is voiced by the Japanese female singer, musician and performance artist, Yuri Masuda (益田祐里; Masuda Yuri).
16 CUL
17 Kokone Kokone (心響), whose name means "Heart Sound" in Japanese, is a Vocaloid 3 vocal released by Internet Co., Ltd..
18 Chika
19 Piko Utatane

Why isn't he number 1? If he won't get a v4, GIVE HIM A V5! This baby doesn't deserve 27!

20 Iroha Nekomura
21 Yuki Kaai
22 Kiyoteru Hiyama
23 Zunko Tohoku Tohoku Zunko is a character created for Voiceroid and was later also developed for the Vocaloid 3 engine.
24 Nana Macne Macne Nana (Japanese: Mac音ナナ, Makune Nana) is a vocal developed for Mac computers for Reason and GarageBand. Her GarageBand and Reason voicebanks were able to be ported over into UTAU, and later on, she was released for Vocaloid 3.
25 Lapis Aoki
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