Good you have backing of an indie to take care of some mechanics.
You say more personal... how so? I would be interested in seeing one of your first contact messages. For example is it: “Hi, I am releasing a new single/ep/album and wondered if you would be interested in reviewing it on your blog?” Or similar?
Doing homework makes a difference. Connect with the bloggers on social media too.
Really, blogger an press and even radio station relationships are often long term relationships. They can take some time to develop... and the initial stages are a bit like getting a first date. You have to be an attractive proposition to them.
So why would they choose to write about you? What incentives are there to write about you? You could say it is only going to a select number of blogs, make it feel exclusive. You could highlight how well it is being received, you could mention how you will add their reviews to your social media, mailing list etc for your fans... if you have a lot of fans, all the better.
if your answer is “because I write good music” you assume they listen in the first place.
Do you have a press kit, an electronic press kit? Do you include press releases? Do you send them a press release first and follow up, or include the press release with your submission. Is your press release customised to the blogger/journo? These guys have deadlines... if you write press releases in a way that encourages the blogger.... say you write it in the style of their reviews, it makes their job easier, and their ability to reach deadlines easier. It also allows you to seed questions, even dictate their review to a degree.
It is worth thinking about your angle. What makes you, this project unique? Why should they click links? Press play? Give them reasons!
Have got creative with your submission? For example, why not record a video where you explain a little about the song/ep/album and mention how important it is to you and thank them for considering your submission... it’s a great way to come over as personal. There’s other things you can do too. These relationships are important and worth investing in.
I will happily interview you for Songstuff, that should help. As a site we really should also do release reviews too, but so far haven’t. Has your label set up many interviews?
I should turn this post into an article lol
Alternates and remixes...
Did you record to a click track? It can rob a little bit of emotion if you are not used to it, but it makes it much easier to remix.
As to alternates, why not do exactly what you have but had backing or harmony vocals? Or add some atmospheric, subtle strings etc. Just on extra instrument will add a big dimension. Remixes can be entirely different.
Have you recorded videos of ANY kind for each song? Video really is vital these days.