Hi Tommy83 ,
Pavel here again.
Let me answer some of these points for you.
Before I start, please know that ATUM was initially developed for the need of my very first company. We tried and helped users with their most urgent needs as the years went. Right now, the software is moving to a more professional approach. So, believe me; more features will come now that will require payment. At the end of the day, I need to pay developers to make this possible.
When you say stock quantity in WooCommerce products when completing a PO, what PO do you mean? The free ATUM feature? Where would you like to see stock info and what stock info, pls?
Profit margins are actually something I want to include in the next few months. We are already working on more precise costing of BOM that will reflect to the comparison of the selling price. However, right now in the free version the gross profit margin is calculated from the purchase price you can set per product. Alternatively, when you use the Product Levels add-on you can have the margin calculated from the actual BOM cost.
barcodes are coming in few months too - can not confirm all the features right now, but we already have barcode premium add-on developed and it goes to testing in September.
History data are a little complicated as far as I know. My developers had issues with many users with very large shops. Each prediction has to go through a lot of data that slows down sites. I believe WooCommerce does not have any table of historical data for sales. So first we have to develop that and they will be calculated from the day you install the feature.
Would you be so kind to name the software you are referring to? I guess these are not built into WooCommerce. The problem is to develop anything there that would work efficiently without any issues with other plugins from other authors using the same features.
Over all, if you need an advanced solution, I recommend looking maybe outside of WP and WC. I plan to bring ATUM out of WooCommerce in to a separate Web App, but that will take some time and money (2 years).
Hope this helps a little.