We'll look (briefly, I hope) at DiT in 88. Fatal Death in 89.
If memory serves, NJN was generally doing their thing in the mid to late 80s, and DiT was in 93. So a few years, but yes, the change in appearance for Tom was very dramatic.
88 will be a packed episode then. Fenric, survival, season 26, DiT, ACE, the 7th doctor and the JNT era