I'll buy it even if all 3 games end up being shit ports.
Bloodmoney is still my favorite Hitman game... and replaying
Hitman2 & Contracts on a decent hardware (as I only played them on PS2) is the icing
on the cake!
The first game is PC-only. Probably that's why (and uprezzing it wouldn't make it look as good as the other two^^).
Contracts features the most iconic missions and settings from the first game but they play out completely different and you have different mechanics and goals so they're still very distinct if you happen to be in a position to have both available to you (get the first game on Steam).
All of them are very much still worth playing (preferably in order of release due to how the mechanics evolved over time).
Finally! The trophies were posted for this a while back so I was worried it would be PS3 only like the Splinter Cell HD game. I can't wait to play through all three of these. Blood Money is one of my favorite games ever.
Either un-get Absolution for Christmas and play the other ones, or play Absolution first so you don't have to experience the crippling pain of feeling like a dog leashed to a bench after running around in the park. (Disclaimer: I've only played one level of Absolution, but yeah.)
Blood Money is considered to be the best. It's a sandbox game with social stealth. Not sandbox like Far Cry 3 is sandbox, there are levels but they're pretty open with multiple solutions for each target and it's up to your creativity and cleverness to find them.