As someone who spent a bunch of years in marketing for semiconductor components, it's an interesting question on how Remington, going forward, would be best positioned in the market.
I think a good question is: Why would someone want to buy a Remington?
With Remington's name recognition and history, I think something 'traditional' that evoked the history and what Remington is known for.
While the current market would probably buy anything they make, their longer term survival may depend on rebuilding their 'brand' - i.e., what does Remington stand for?
Isn't Remington known for both the accuracy of the model 700 and the 870? Maybe they could lead with solid versions of those.
And, as mentioned, the 700 needs to include a trigger and stock worthy of the name and history.
A 'bolder' approach might be to go all in on specific subsegment with a specific product so they can make an attention getting statement - e.g., guaranteeing 1/2 MOA [1/4 MOA would be better] accuracy, the worlds lightest/most reliable hunting rifle, partnering with a chassis manufacturer - the point would be not necessarily based on the market size but more on making a statement.