It's been 4 months since the initial post and my plans have altered somewhat.
1 - Foliage/sepals fragrance
Still intend to pursue foilage fragrance via Lord and Lady Penzance. Have a 100+ Lord Penzance seedlings at the moment and a bunch of R. Rubiginosa OP from seed collected from feral plants in South Australia, they haven't germinated as well as the Lord Penzance seed but it might be a little too cold for that now and might explode come winter.
As a slight offshoot of the above plan to make a line around Mousseux du Japon and Lemon Delight, with MdJ exaggerated mossing extending into it's foliage and Lemon Delights repeat and lemon scented moss it may be beneficial to combine with R. Rubiginosa derivatives at some point. There may be a step or two between combining the two directly as both have health/vigor issues so may need a bit of [(MdJ x healthy) x (MdJ x healthy2)] x [(LD x healthy) x LD] or something along that general line. Will attempt both options to check though.
Also another slight offshoot is based around Helga Brauer, has some mossing/glandular parts and a decent amount of cresting. Will be breeding it with offspring of George Best/Firecracker as they all seem powdery mildew resistant (unlike most other seedlings I've grown...) and many have leafy and glandular sepals which may combine well and be a step toward reblooming scented crest....also probably want to breed out the suckering, it's quite a heavy sucker.
And the last off shoot is based around R. Foetida, it's fruity scented growing tips...will be throwing various Knockouts, Carefree Beauty, modern yellows, reblooming spins, anything with glandular parts, Talisman and R. sweginzowii at it. Also since it seems it's pollen seems to throw 1n (there's a lot of triploid offspring), will throw it's pollen down at every diploid I own. It's largely a scatter gun approach to see what happens, expect BS to be a big issue but if even 1 in 1000 retains the fruity scented growing tips and is better (even slightly) behaved than it's parent it's a success as far as I'm concerned.
Also plan to follow (loosely) in the steps of Dr Svejda's early work. Lot of crosses with Schneezwerg, Calocarpa, Therese Bugnet and Fru Dagmar Hastrup with other things like polys, teas/chinas, hyb gig, the one healthy seedling of Sweet Spot Calypso (no mildew, no bs, shinier foliage)....expect a lot of sterility but as Dr Svejda showed Schneezwerg can produce (a very small amount of) fertile offspring with (some) Tea's and Calocarpa is a fertile half china. When/If fertile results are achieved they'll be crossed with each other trying to maintain rugrose foliage and searching for juvenile bloom.
The last plan is just to cross the various diploids I have with each other to increase the breeding options I have on hand in the future and also to breed the once bloomers (and non juvenile bloomers) to repeat (juvenile) bloomers, things like Golden Chersonese, R. Glauca (it's pollen), Nieuwesteegii (R. foliolosa × R. willmottiae) and R. helenae....but also possibly the more odd thing my best coloured moderns (tets) to dips to get the colours onto triploids who'll hopefully produce some fertile 1n pollen to backcross again down to diploid while maintaining the intended colours (eg like Baby Faurax x (Baby Faurax x Rhapsody in Blue) and maintaining a deep purple).
It's all a bit of a big numbers game at this point, fighting against the odds but eventually all 3 paths will combine, just have to wait for the canina meosis to break with path 1 so the foliage fragrance genes can pass via pollen (relatively easy to test for) then can pull it down to diploid level. Path 2 will be obvious when juvenile blooming rugosa start appearing and then the introgression of path 3 into 2 can really start happening.
And that's the next 30 to 40 years planned out.