Slashdot (not the beta) as it is will live (or die) by the evolution of its community of users. However decisions by Business Analysts of a company that happens to own the framework assets (hardware, software) who have the singular goal of profit through advertisements can very easily make the community of users go elsewhere (they will scatter to other forums and some of the talented souls will create forums of their own as a replacement).
Slashdot is a discussion forum which happens to be driven by a loose direction/range of topics and interests where any so called 'content' is created wholly by the interests and activity of the users in response to each other and in response to the topics. The whole value of Slashdot is an incidental emergent property of this interaction of the user base made possible due to its simple, low key, non interfering design that encourages a high bandwidth of user to user communication and networking of arguments (quality or not).
The fastest way to kill Slashdot will be to introduce a design that is loud, noisy, distracting, click happy with visual _exercises_ with dynamic pop ups and other toys that are just cognitively distracting (because in truth people cannot multitask, they can only task swap quickly) and energy sapping. These features basically kill the fundamental characteristics that made it the place that it is.
Maybe that is the goal! If your goal is to run the community off then by all means go ahead as you are on track. I do not think that you will get replacements. :) People will just go elsewhere/build an elsewhere. I for one will just spend more time on Reddit until one of the new alternatives becomes the new old Slashdot.
Now if you are trying to preserve the community here...well if you think market speak and tricks are going to work then you had better do some analysis of the community here. Seriously. You appear to be hilariously out of touch with the demographic. This is not a demographic that you can expand by making the place pretty or appealing to the everyone. You will just run off everyone and that will be the end of it.
The historical footnote is likely to be: Slashdot -- the interesting discussion forum that DICE ended in the mid 2010s.