Expanding muh Horizons

So I figured it's time I expand my hero pool and be a tad more multi-dimensional with my play. The question is; where should I expand to? So I figured I'd get some insight from you guys.

Right now, these heroes are my best for each corresponding position:

1- Wraith King/ Chaos Knight
2- Shadow Fiend
3- Bounty Hunter (back when he was played as an offlaner)
4- Abaddon
5- Lich

From where should I branch out to? Any heroes that possess a similar play style to these that I could start experimenting with? Your feedback is appreciated.

Try out the heroes from the positions you are more acquainted with first, then branch out from there to your less-played position. If there isn't a position you play more than the others, go by the heroes which are similar (in gameplay, itemization, etc) to the ones you already play.

I'd say you can also try out these heroes which are quite similar to the heroes you posted originally.



1- Sven
2- Death Prophet
3- Slardar
4- Treant Protector
5- Crystal Maiden