That still does not explain the elimination of the Kentmere very good Fibre based papers whilst leaving Kentmere resin coated papers to run alongside Ilford's own products. The tone of the Kentmere resin coated papers has changed markedly from a cool tone and now resembles Ilford Multigrade. Why leave that in production? Kentmere is also slower than it used to be. It was a good stop faster with a harder grade per filter and as I mentioned before the filtration now is exactly the same as Ilford's own. I don't think it is as simple as stated
Very simply, the sales of the VCFB & Bromide relative to the costs of manufacturing multiple emulsions (3 for the 3 grades of Bromide & at least 2 for the VC FB) may have been sufficient to support one 3-emulsion cooler toned product, but not more. For all we know, Bromide may well have been being coated on an 18-24 month schedule latterly.
Branding the new paper 'Ilford' & making it on their most efficient plant will have brought costs down & enabled it to be marketed as what is perceived to be the more 'premium' of the two brands. Raising the price to level pegging with MG Classic will have also helped given the (far too low) margins on most photographic materials today. Indeed, doing so may have been critical in preventing a cooltone product disappearing off the market completely.
I do recall that feelers were discreetly being put out in 2011/12 about possible changes to the VCFB paper & it would not surprise me if that informed the Cooltone FB.
The RC stuff is likely to remain as there is still a market for a budget entry-level paper that does not spend a great deal of time worrying over image colour or paper speed. If you were manufacturing a range of papers, unifying the dye sensitisation across all the materials makes massive economic & engineering sense & reduces the potential for QC problems amongst others.
If VCFB matters that much to you, see if you can get Harman to quote for a custom batch...