Unlike Hoth Luke, I have almost no complaints with Solo but if Sideshow is going to charge as much as Hot Toys now then they really need to step up their game and deliver a Hot Toys quality product. The rubber boots were a cheap corner they cut. Hot Toys would have delivered quality cloth boots. Fortunately I've a pair of HT Bespin Luke boots on the way to mod though and thankfully that should be the only "upgrade" this figure really needs other than the usual body swap to a Hot Toys Truetype.
Just dab some matte clear on the boots. It's really only the slight sheen that is responsible for any "cheap toy" aspect and they're a great sculpt. Even with all the mods necessary to make the HT Bespin boots look like Hoth boots (and that is a lot of work) they still really aren't correct for Hoth because they are the thin canvas versions, not the fat padded fabric versions used on location in Finse, which are the most commonly seen.
I have an extra set of HT Bespin garb and will be doing a new Bespin Luke using the new SSC unhatted head. It looks awesome on the Ht outfit and really matches up well with my HT BD head display.