I don't think people should buy higher nicotine just to get TH. It's a drug, not a TH additive. You can overdose on nicotine.
If you want big TH get a more powerful PV that can use LR attys and LR cartos. Or look for flavors that have good TH. Some tobacco flavor juices have good TH, some don't. Fruits and creams - not much TH. Menthol, mint, spices generally have decent TH.
If you want to add TH to a juice you could try an additive called QHit or you could use something like FreedomSmokeUSA's pepper ejuice (black ground pepper is the photo).
If you need all VG for some reason, VG normally has the least TH. But AveJuice Boba's Bounty (all VG) has a lot of TH - I don't know what they put in it but it's good. Not sure if their other flavors have similar TH but you could ask them.
Re juices - I was happy with FreedomSmokeUSA's Desert Ship - a somewhat pungent Turkish Blend that smells a bit like a freshly opened pack to me - decent TH for me in 70pg/30vg and 80pg/20vg would probably have more. I am also going to try their Camtel (Camel-alike) which should be similar but maybe a bit spicy. I also like a weird combo - Dekang DK-TAB with a bit of FSUSA (Chocolate) Orange Ball mixed in. I also get decent TH out of juices with spices like nutmeg in them or rum flavor and spices. ANd Velvert Vapors Raspberry Gingerale - sort of a tingly TH. But my satisfaction comes from a combination of enough TH and pleasing calming aromas of tobaccos, cocoas, and other aromas.