Hi there,

Remember that google always seeks to serve the a better user experience.
Technically, the XML sitemap is the one needed for crawlers. And the "human-readable" sitemap is focused on users.
I might be saiyng something obvious, that's the way i've understood it.

The benefit of the "human-readable" sitemap shuld be in the part of user experience, Google might see it that way. 
As a visitor, I find usefull that kind of sitemap, it gives you a quick overview of the siite and make your way to the final page faster.

Hope it helps.
GR.

Hi Pervaiz,

The redirection 301 that you're planning to do might improve your SEO.

On one hand, you must be certain that those 400 links that are in the old domain have some quality and are good for your main site.
I do recommend you to check them over somt platmforms, like OSE or Ahrefs.

On the other hand, in my experience making redirections like that were a pain. Remember that the momento that you set the redirect 301, all the links will be pointing to you URL, that makes a ton of new links to the final URL. I may be something that causes harm to your linkbuilding history.

Hope it helps.
GR.

Hi,

How old are the pages that you are tracking? Have you considered that SERPs will fluctuate for a few weeks since google indexed them?
Also, you should take into consideration that January has been a really windy month in the SERPs, that's because there have been many updates on the Google Algorithm.
Check them out here:
Google Algorithm Change History - Moz.com
Algaroo.com
Mozcast.com

You should also take consideration, as you've said, that your pages aren't optimized over SEO. 
I'd recommend you that learn about the major updates that have been over january and analize wether your site may be not suitable for google to rank you better.

Hope it helps.
GR

Hi Pervaiz,

I do agree with Peter Nikolov.
For more information, I do strongly suggest you to learn and read a lot about the subjet. Here you have some blog posts and Q&A:

How Google Knows What Sites You Control And Why it Matters - Whiteboard Friday - Blog Moz.com
IPv6, C-Blocks, and How They Affect SEO - Blog Moz.com
the benefits from having a dedicated IP - Moz Q&A
Websites on same c class IP address - Moz Q&A

Hope it helps.
GR

Hi Steven,

The structure of the URLs is a question of matter to many people. Let me recommend you other 3 Q&A question that have concerns like yours.

Which URL structure should I use? - Moz Q&A
Optimizing an e-commerce website - Moz Q&A
Ecommerce question - overoptimisation - Moz Q&A

Hope its help full. Personally i don't think that there is a specific answer to what you're asking.

GR

Hi Ben!
Yes, it affects. 
That was said by Matt Cutts, check out the videos:
Can the geographic location of a web server affect SEO? - Youtube - Matt Cutts 
What impact does server location have on rankings? - Youtube -  Matt Cutts

Also, here you got other 2 Q&A that where responded with great info.
Effect of same country server hosting on SEO - Moz Q&A Does the Location of my Server effect my SEO? - Moz Q&A

In my experience (there aren't servers in Argentina) the affect is minimum. I believe that there are other factors that influence more than the location server's IP.

Hope I was helpfull.
GR

Hi Mike,

Just as Gyorgy.B said, Google is pretty smart and does realize that is crawling an E-Commerce site. The problem that you're mentioning has already been asked, and it might be of some help:
How to avoid keyword stuffing on e-commerce - Moz Q&A Keyword stuffind - E-commerce websites - Moz Q&A

Also, I'd recommend you to take a deep lonn read of these article, them will clarify you a lot about keywords stuffing and, generaly, about SEO on e-commerce:
5 things about Keyword stuffing and SEO SEO for E-commerce websites - KissMetrics
What is keyword stuffing - E-commerce

Of course, the general advise is to avoid this issue. I strongly recommend that ecommerce pages shuold be filled with content. At least some text that differenciate one page from another.
Hope this was helpful

GR

No, those will not count as the same domain. But they will not have the same effect than links coming from: xyz.com, abc.com and so on.
Being a link from a 2.0 platform reduces its effect.

Am I clear?

What do you think about the update that was informed some days after your answer?
It's showed in the WMT console:

https://support.google.com/webmasters/answer/6211453#search_analytics

Hi Jubaer Ahmed,

For me it isnt really clear what you're asking. I'll answer what I've understannd of your question:
Every link you get is a link per se. Also if you get several links from different 2.0 platforms, every link you get will count. 
If you are asking whether many links from the same 2.0 platform count every one as a links from different sites. It doesn't.

BUT, you have to take into account that if those links are created in, for example, several wordpress sites with a lot of time online and much presence in SERPs those will count as one every one.
On the other hand, if you are creating new 2.0 sites to get those new links: When creating several sites on the same platform will make those links less relevant.
(Always considering that the links point to the same web page).

Hope this is helpful.
Bye