Thomas was a great leader and humble man. Having said that, he was also a traitor to the South and Virginia. Post war he was not well liked by anyone, rightly or wrongly, nobody really likes a turn coat, even a useful one.
Well, Thomas may have been a secret abolitionist!
His record during reconstruction as a military governor was praised on all sides. And that story about his family turning his picture to the wall when he stayed blue turns out to be bogus!
Oddly enough, his being a Virginian was what got him crosswise in the road with the Ohio boys, Grant and Sherman. Sherman's brother was an enormously influential Senator who mafe sure the Ohio people got their way!